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Vol, III, Part 2, of the British Marine
Annelids, although issued for the year 1916,
is sent to all members of the Ray Society who
have pa-d their subscriptions for 1915 and have
not expressed their intention of discontinuing
their membership.

If tlie six coloured plates, for which un-
coloured ones are here substituted, are obtained,
they will be issued free to all subscribers for
1916.

The production of this slip, with 6d. for
packing and postage, will entitle purchasers of
this part, other than members of the Society,
to a set of the coloured .plates, if obtained, on
application to Messrs. Dulau & Co., Ltd., 37,
Soho Square, W.

John Hopkinson,

Sec. Ray Soc,

Weetwood,

Watford.
October, 1915.

THE

RAY SOCIETY

INSTITUTED MDCCCXLIV.

This Volume is issued to the Subscribers to the Ray Society for the Year 1916.

LONDON:

Mis/

HUvEgr. Zee*..

,a/*

A

MONOGRAPH

/

OF THE

BRITISH
MARINE ANNELIDS.

/

VOL. III. PART II.-PLATES.

POLYCH^ETA-

OPHELIID^l TO AMMOCHAEID^.

BY

WILLIAM CARMICHAEL McINTOSH, M.D.Edin.,

L.R.C.S.E, LL.D. (St. AND. & EDIN.), F.R.S, F.R.S.E, F.L.S, C.M.Z.S, V.D., J.P, etc.,

PRESIDENT OF THE RAY SOCIETY; PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ST. ANDREWS

DIRECTOR OF THE UNIVERSITY MUSEUM AND OF THE GATTY MARINE LABORATORY; SUB-COMMISSIONER

AND SCIENTIFIC REPORTER TO THE TRAWLING COMMISSION UNDER LORD DALHOUSIE (1883-85) ;

MEMBER OF THE IRISH INLAND FISHERIES COMMISSION, 1899-1901; SCIENTIFIC

MEMBER OF THE FISHERY BOARD FOR SCOTLAND, 1892-1895, ETC.

LONDON :
PRINTED FOR THE RAY SOCIETY,

AND SOLD BY

DULAU & CO, LTD, 37, SOHO SQUARE, W.

1915.

MAY 3 1977
*/8RARIES

PRINTED BY ADLARD AND SON, LONDON AND DORKINC

The Council of the Kay Society having found it impossible on account of the war yet to
obtain the six coloured plates, LXXXVIII to XCIII, the lithographing of which was completed
in the autumn of 1914, decided to have uncoloured copies made of the coloured proofs by the
collotype process, so as to render the text at once available to workers. This has been satis-
factorily done by Messrs. Griggs &' Sons. The uncoloured plates, XCIY to 0X1, were finished in
October, 1914.

Should the coloured plates eventually be obtained, they will be sent to all subscribers for
the year 1916.

It is well to state, in order to avoid repetitions in the explanations of the plates, that in
all cases where oculars and objectives are referred to, a microscope by Zeiss was used.

!----..,

c^

"3»

A

MONOGRAPH

OF THE

BRITISH
MARINE ANNELIDS.

VOL. III.
POLYGH^ETA-
OPHELIID^ TO AMMOCH-ARDm

^#2 // -•'"■'

~****r

WILLIAM CARMICHAEL McINTOSH, M.D.Edin.,

L.E.C.S.E., LL.D. (St. AND. & EDIN)., F.R.S., F.K.S.E., F.L.S., C.M.Z.S., V.D., J.P., etc.,

PRESIDENT OF THE RAY SOCIETY ; PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ST. ANDREWS J

DIRECTOR OF THE UNIVERSITY MUSEUM AND OF THE GATTY MARINE LABORATORY; SUB-COMMISSIONER

AND SCIENTIFIC REPORTER TO THE TRAWLING COMMISSION UNDER LORD DALHOUSIE (1883-85) ;

MEMBER OF THE IRISH INLAND FISHERIES COMMISSION, 1899-1901 ; SCIENTIFIC

MEMBER OF THE FISHERY BOARD FOR SCOTLAND, 1892-1895, ETC.

LONDON :
PRINTED FOR THE RAY SOCIETY,

AND SOLD BY

DULAU & CO., LTD., 37, SOHO SQUARE, W.
1915.

PRINTED BY ADLABD AND SON, LONDON AND DORKING.

PLATE LXXXVIIL

Fig.

1. Lateral view of Ophelia limacina, H. Bathke, from St. Andrews. Slightly enlarged.

2. Partly lateral view of Polyophthalmus pictvs, Dujardin, from Bantry Bay. Enlarged.

3. Dorsal aspect of Travisia Forbesii, Johnston (the odour of which is peculiar).

Enlarged.

4. Scalibregma inflatum, H. Bathke, from Lochmaddy, North Uist. Enlarged.

5. Arenicola marina, L. Dorso-lateral view with proboscis extruded.

6. Gill of Arenicola marina. Magnified.

7. Young of the same in its pelagic sheath of mucus. Enlarged.

8. Arenicola ecaudata, Johnston. Slightly enlarged. From Dr. Ashworth's Monograph,

by the courtesy of the Trustees of the British Museum.

9. Arenicola brdnchialis, Audouin & Edwards. Slightly enlarged. From Dr. Ashworth's

Monograph, by the courtesy of the Trustees of the British Museum.
10. Ephesia gracilis, H. Bathke; in a slightly softened condition, the reddish hue being
due to extravasations of blood.

Plate LXXXMII.

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Werneni .Winter, Frankfurt a /X.

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PLATE LXXXIX.

Fig.

1. Stylarioides plumosa, 0. P. Midler, from St. Andrews. Enlarged.

2. Flabelligera affinis, Sars, from St. Andrews. Enlarged.

8. Ghsetopterus variopedatus, Penier, from Guernsey. Enlarged.

4. Polydora ciliata, Johnston, from the rocks at St. Andrews. Enlarged.

5. Semi-diagrammatic view of Streblospio shrubsolii, F. Buchanan.

t. tentacle; br. branchise; m. mouth ; ph. pharynx; oe. oesophagus; int.
intestine; a. anus; d.v. dorsal vessel; t.v, vessel of tentacle; d.b.v. branchial
vessel in connection with dorsal vessel ; v. b. v. branchial vessel in connection with
ventral vessel; v. v. ventral vessel; sin. sinus; d.s.v. dorsal vessel snipped off
from the rest of the sinus, but lying close to the wall of intestine, entering the
intra- vesicular ridge ; n. c. nerve-cord ; gng. peristomial ganglion ; neph. e. external
limb of thoracic nephridium opening in second segment to exterior ; neph. i.
internal limb of thoracic nephridium; coel. coelom ; sept, septa. Longitudinal
muscles omitted. From Miss F. Buchanan's figure.

Plate LXXXDC.

R.M.Figs.1,3+4., Fig. 5 F:B.,Fig.2 A.H.W.

Werner iiWirder, Frankfurt a /M

Plate LXXXIX.

R.M, FIGS- 1, 3 & 4, FIG. 5 F.B. FIG. 2 A.H.W.

W. GRIGGS * SONS. LTD., COLLOTYPE

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PLATE XC.

Fig.

1. Dorsal view of Ferine foliosa, Sars, from St. Andrews. In this example reproduc-

tion of the posterior region had taken place, as indicated by the larger branchige
in front. Enlarged.

2. Nerine cirratuhos, Delle Chiaje, from Guernsey. Enlarged.

3. Dorsal view of Scolecolepis vulgaris, Johnston, from St. Andrews. Enlarged.

4. Cephalic region and tentacles of the same. Enlarged.

5. Foot and gill of the foregoing seen from the front in life. Enlarged.

6. Magelona papillicomis, Fritz Miiller, from St. Andrews. Enlarged.

Plate XC.

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PLATE XCI.

Fig.

1. Girratulus tentaculatus, Montagu, from St. Andrews. Enlarged.

2. Girratulus cirratus, 0. F. Miiller, from St. Andrews. Enlarged.

3. Dodecaceria concharum, CErsted, from St. Andrews. Enlarged.

4. Part of the middle region of Nereis Girratulus, Delle Chiaje, from St. Andrews.

Enlarged.

Plate XCL

Figs.3+^ RM.Cstera A.H.W.

Plate XCI.

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GRIGGS * SONS, LTD., COLLOTYPE

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PLATE XCII.

1. Posterior end of Cirratulus tentaculatus, Montague, from St. Andrews. Enlarged.

2. Portion of the posterior region of a male Notomastus latericeus, Sars, to show the pale

enlargements due to the sperms, St. Andrews. Enlarged.

3. Gapitella cqpitata, 0. Fabricius, from St. Andrews. The sexual aperture is observed

between the eighth and ninth segments. Enlarged.

4. Anterior end of Poecilochsetus serpens, Allen. Reduced from a drawing by Dr. Allen.

5. Nicomache maculata, Arwidsson, from St. Andrews. Enlarged.

5a. The same with the anterior end recently reproduced projecting from its tube and
viewed laterally. Enlarged.

6. Oivenia fusiformis, Delle Chiaje, projecting from its tube. A drawing from life by

Mrs. Arnold "Watson. Enlarged.

Plate XCH

Figs.2+3 R.M. Fig. 4 E.J.A. : : ; A.H.W

Plate XCII.

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PLATE XCIII.

Fig.

1. Spiophanes bombyx, Claparede, from the East Sands, St. Andrews. Enlarged.
la. Tail of the foregoing. Enlarged.

2. Pygospio elegans, Claparede, from the East Rocks, St. Andrews. Enlarged.

3. Polydora casca, CErsted, from a chink in the East Rocks, St. Andrews. Enlarged.

4. Young Magelona papillicornis, Fritz Miiller, St. Andrews, June, 1898. Enlarged.

5. Younger stage of the same species, St. Andrews, May loth, 1900. Enlarged.
6 and 7. Two post-larval stages of Polydora ciliata ?, St. Andrews. Magnified.

8. Young Spionid {Spiophanes f), St. Andrews, April 21st, 1893. Magnified.

9. Older stage of young Spionid (Spiophanes ?), St. Andrews, April 20th, 1893.

Magnified.
10. Larval Capitellid (Capitella or Notomastus), St. Andrews, October 30th, 1897-
Magnified.

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PLATE XCIV.

Fig.

1. Posterior end of Stylarioides flabellata, Sars, from Norway. Enlarged.

2. Young Arenicola marina, L., about half an inch in length. gl. oesophageal glands.

X about 40 diam.

3. Cephalic region and barred tentacle of a young Spionid with a simple conical snout,

from St. Andrews, 1863. X about 40 diam.

4. Early egg of Nerine cirratulus, Delle Chiaje. x 80 diam.

5. More advanced egg, February 16th, 1891. X 60 diam.

6. Larva of the foregoing, February 26th, 1889. X 116 diam.

7. Egg of Nerine ?, March 4th, 1892. X 116 diam.

8. Spionid larva, from tow-net July 6th, 1890, viewed from the under surface. St.

Andrews. Magni/ied.
10. Older stage, probably of Sabellarian, St. Andrews, oJuly 19th, 1888. Magnified.
11 and 4iU£ Somewhat oblique view of young Sabellarians, the former with developing

palpi and tentacles, for comparison with Spionids. July 18th, 1888. St. Andrews.

Magnified.

12. Larva of Nerine cirratulus ?. St. Andrews, February 24th, 1891. The centre is

opaque. Magnified.

13. Ovum of Scolecolepis vulgaris* Johnston. May 11th, 1898, St. Andrews. X oc. 2,

obj. D.

14. Early larva of Spionid (pelagic). St. Andrews. Magnified.

15. Young PdBcilochmtus of thirty segments. St. Andrews, October 27th, 1888.

According to Claparede, six short feet occur in front, not seven. x ocC 3, obj. A.
Drawn by Mr. Pentland Smith, M.A., B.Sc.
15a. Young form of the same or an allied species? July, 1893. Drawn by Rev. J. M.
Anderson, M.A., B.Sc. x similarly.

16. Young Spionid {Spiophanes ?) . July 25th, 1888, St. Andrews. Drawn by Mr.

Pentland Smith, M.A., B.Sc. Magnified.

17. Young Magelona papillieornis, F. Miiller. St. Andrews, May 25th, 1900. Magnified.

18. Twentieth foot of Cirratulus Ghiajii, Mel. . X 360.

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PLATE XCV.

Fig.

1. Cephalic region of Ophelia limacina, H. Rathke. Enlarged.

la. Lateral view of the same with the proboscis (a) extruded. Enlarged.

lb. Dorsal view of the posterior end. Enlarged.

1c. Ventral view of the same. Enlarged.

Id. Lateral aspect of the caudal region. Enlarged.

2. Lateral view of young Ophelia limacina, about half an inch in length. Enlarged.
2a. Tip of the caudal region. Enlarged.

3. Lateral view of Ammotrypane aidogaster, H. Rathke. Slightly enlarged.

3a. Cephalic region with the nuchal organs, and anterior segments from the dorsum.

Enlarged.
3b. Lateral aspect of the caudal region. Enlarged.
3c. Ventral view of the same in a specimen from Finmark. Enlarged.
od. Foot of the foregoing, with bristles and branchial cirrus. Enlarged.

4. Dorsal view of Ammotrypane cylindricaudatus, Hansen. Enlarged.
4a. Caudal process. Enlarged.

5. Lateral view of Armandiella Robertianae, McL, from the Sound of Harris. Enlarged.

6. Eumenia Jeffreysii, McL, dredged off Balta. Slightly enlarged.

6a. Lateral view of a few segments from the middle. The ventral surface is on the
left. Enlarged.

7. Enlarged view of the anterior end of Travisia Forbesii, Johnston.
la. Tip of the tail similarly enlarged.

lb and 7c. Front and lateral views of the glands of the skin of a variety from Greenland.
The latter (1c) is in section. Magnified.

8. Travisia Gravieri, McL Enlarged.

9. Outline of the posterior end of Ephesia gracilis, H. Rathke. Enlarged.

10. Ventro-lateral view of Arenicola ecaudata, Johnston, with fche proboscis extruded.

Enlarged.
10a. Anterior end of another example more highly magnified.

11. 11a, and 11/;. Various aspects of the papillse on the skin of Stylarioides plumosa, 0. F.

Midler, x 100 diam.

12. Lateral view of Brada villosa, H. Rathke. Enlarged.

13. Anterior foot of Eumenia crassa, (Ersted. Enlarged.
13a. Twentieth foot. Enlarged.

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PLATE XCVI.

Fig.

1. General aspect of two of the segments of Stylarioides plumosa, 0. F. Miiller. Enlarged
1 a. Bifid branchia of an example sent by Dr. Howden, from Montrose Bay. Enlarged.

2. Stylarioides glauca, Malmgren. Enlarged under a lens.

3. Stylarioides arenosa, Webster. Guernsey. Enlarged.

4. Stylarioides fiabellata, Sars, from the Channel slope. Enlarged.

5. Head and anterior region of Stylarioides Sarsi, Mcintosh. Enlarged.

6. Brada villosa, H. Rathke, var., from the Atlantic. Enlarged.

6 a. Lateral view of three segments, so as to show the bristles and the rough surface.

Magnified.
6 b. Papilla from an example procured in the ' Knight Errant.' Magnified.

6 c. Segments of a variety of the same showing the papillae. Magnified.

7. First foot of JEuspio Mesnili, Mcintosh (= Spio filicomis, Malmgren). x 35 diam.

7 a. Tenth foot. x 35 diam.

7 b. Twenty-fifth foot. x 35 diam.
7 c. Fiftieth foot, x 35 diam.

7 d. Foot in front of tail. x 35 diam.

8. Tenth foot of Scolecolepis lamellata, Mel. Taugiers Bay, from the ' Porcupine,' 1870.

x 35 diam.

8 a. Fiftieth foot (vide ' Ann. Nat. Hist.,' ser. 8, vol. hi, p. 175).

9. Cephalic and anterior regions of Pygospio elegans, Claparede, from St. Andrews, with

seven eye-specks. Enlarged.

9 a. Tail of the foregoing. Enlarged.

10. Slender papilla from Flabelligera affinis, Sars. x oc. 4, obj. D.

11. Papilla from Flabelligera Buskii, Mel. x oc. 2, obj. D.

12. Ventral aspect of the anterior region of Brada villosa, H. Bathke, showing the

papillae of the segmental organs. Enlarged.

13. Ventral view of the anterior end of Nevine foliosa, Sars, with proboscis extruded.

From Lochmaddy. Enlarged.

14. Advanced ovum of Spiophanes bombyx, Claparede, from the ccelom. x 180.

15. Hooks and bristles of second segment of Sclerocheilus minutus, Grube, off Sark,

August, 1868. x 360.

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PLATE XCVIL

Fig.

1. Anterior foot (10th ?) of Nerine folios a, Sars. X about 25 diam.
1 a. Fiftieth foot. X about 25 diam.

1 b. Ninetieth foot. x about 25 diam.

1 c. One hundred and twenty-fifth foot of the same. X about 25 diam.

2. Tenth foot of Ferine cirratwlus, Delle Chiaje. X about 25 diam.

2 a. Twenty-fifth foot. X about 25 diam.
2b. Ninetieth foot, x about 25 diam.

2 g. Posterior foot of the same species. X about 25 diam.

3. First foot of Scolecolepis vulgaris, Johnston. X about 25 diam.

3 a. Tenth foot. X about 25 diam.
3 b. Fiftieth foot. X about 25 diam.

3 c. Posterior foot. X about 25 diam.

3 d. Foot in front of tail. X about 25 diam.

4. Twenty-fifth foot of Scolecolepis fuliginosus, Claparede. X about 25 diam.

4 a. Fiftieth foot of an example from Whitby, x about 25 diam.

4 b. Posterior foot of the same species from Luccumb Chine. X about 25 diam.

5. Fifteenth foot of Scolecolepis cirrata, Sars. X about 25 diam.

6. Tenth foot of Spiophanes bombyx, Claparede. X about 25 diam.
6 a. Fifteenth foot. X about 25 diam.

6 b. Twenty-fifth foot. X about 25 diam.

6 c. Posterior foot. X about 25 diam.

6 d. Posterior foot with bifid dorsal cirrus. X oc. 2, obj. A.

7. Portion of the body of Polydora ciliata, Johnston, with parasitic Infusorian. X 80 diam.

8. Thirteenth foot of Pygospio elegans, Claparede. x about 40.

9. Second foot of Sjpio filicomis, 0. Fabricius. X oc. 2, obj. A.
9 a. Tenth foot. X oc. 2, obj. A.

9 b. Twenty-fifth foot, x oc. 2, obj. A.
9 c. Fiftieth foot, x oc. 2, obj. A.
10. Tail of Spio C, St. Andrews. X 50 diam.

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PLATE XCVIII.

Fig.

1. Head of Nerine cirratulus, Delle Chiaje. From a spirit-preparation. Enlarged.

2. Head and anterior end of Scolecolepis vulgaris, Johnston. Spirit-preparation.

Enlarged.

3. Head and anterior region of Scolecolepis cirrata, Sars, from Peel. Spirit-preparation.

Enlarged.
4 and 4'. Cephalic region of Scolecolepis fuliginosus, Claparede. The former shows the
central region more highly magnified, the latter the entire anterior region.
Enlarged.

4 a, Caudal process. Enlarged.

4b. Compound foot viewed from the ventral surface. Enlarged.

5 and 5a. Dorsal and ventral views of the head and anterior region of Enspio Qravieri,

Mcintosh, St. Peter Port, Guernsey. Enlarged.
5 c. Tail of the foregoing (P). Enlarged.

6. Caudal region of Euspio Mesnili, Mel. (= Spio filicornis, Malmgren), from Bressay

Sound, Shetland. X about 100.

7. Portion of a tube of Ghxtopterus variopedatus with zoophytes growing on it. From

St. Andrews Bay. Slightly enlarged.

8. Cephalic region of Spio D. Deep sea fishing, St. Andrews. Enlarged.

9. Snout of Aonides oxycephala, Sars. Enlarged.
9 a. Caudal end (devoid of processes). Enlarged.
9 6. Fourth foot, X 50.

9 c. Twentieth foot, X 50.

9 d. Foot about the middle of the body. X 50.

9 e. Foot near tail. X 200.

10. Snout of Spiophanes bombyx, Claparede. Enlarged.

10 a. Tail. Enlarged.

11. Head and anterior region of Spio filicornis, O. Fabricius. X about 50.

11 a. First foot. X about 50.

12. Dorsal view of the snout of Prionospio Malmgreni, Claparede. Enlarged under a lens.

13. Caudal region of Polydora quadrilobata, Jacobi, after Carazzi.

14. Head and anterior region of Pygospio elegans, Claparede. Enlarged.

15. Head and anterior region of Polydora ciliata, Johnston. Enlarged.

15 a. Caudal funnel. Enlarged.

16. First foot of Polydora flava, seen from the dorsum.

16 a. The same seen from beneath to show the bristles. X oc. 4, obj. A.
16 b. Lateral view of second foot. Enlarged.

16 c. Foot from the middle of the body with the bristles. X oc. 4, obj. A.
16 d. Caudal funnel. Enlarged.

17. Anterior foot of Polydora quadrilobata, Jacobi, var., seen obliquely to show the

bristles. X oc, 4, obj. A.

18. Tip of the tail of Cirratulus tentaculatus, Montagu, from Plymouth. Enlarged.

19. Anterior region of Notomastus latericeus, Sars. Enlarged.

20. Anterior region of male Gapitella capltata, O. Fabricius. Enlarged.

21. Outline of variety of Notomastus latericeus, Sars (spirit-preparation), dredged off

Cape Finisterre, ' Porcupine,' 1870. The proboscis is extruded. Enlarged.

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PLATE XCIX.

Fig.

1. Tubes of Polydora ciliata, Johnst., attached to free surface of rock in which is the

tunnel. The tentacles of the living form extend from that on the right. Enlarged.

1 a, Contracted tentacle of the same showing its general structure in life. a, ciliated

groove ; b, continuation of coelom ; c, blood-vessel. Magnified.

2. Lateral view of the head of Proclymene Millleri. Enlarged.

2 a. Another example in which the cephalic peak is less developed. Enlarged.
2 b. Dorsal view of the cephalic plate. Enlarged.

2 c. Anal disc of the foregoing. Enlarged.

3. Caudal region (thickened rim and disc) of Proclymene I. Enlarged.

4 and 4 a. Views of the anal disc of Isocirrus DA. ' Porcupine,' 1870. Enlarged.

5. Lateral view of the cephalic region of Isocirrus planiceps, Sars, dredged off the

Hebrides. Enlarged.

5 a. Caudal disc. Enlarged.

5 b. Snout of variety G. Skerries, Shetland, 1868. Seen from the ventral surface.

This is not mentioned in the text. Enlarged.

6. Lateral view of the cephalic region of Arwidssonia zetlandica, Mel. Enlarged.

6 a. Another example with the proboscis extruded. Enlarged.
6 b. Papillas of the proboscis. Magnified.

6 c. Dorsal view of the cephalic plate of the same. Enlarged.

6 d. Ventral view of the cephalic plate with the mouth. Enlarged.

6 e. View of the caudal disc. Enlarged.
6f. Lateral view of the same. Enlarged.

7 and 7 a. Dorsal and lateral views of Praxillura 0. ' Porcupine,' 1870. x 15.
8. Segments of Bhodine gracilior from Norway showing the collars.

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PLATE C.

Fig.

1. Tenth bristles (dorsal) of Dodecaceria conchanmi, GErsted. X 200.

2. Fifth foot of Ghsetopterus variopedatus, Renier, from South Africa. X 15.

3. Bristles of foot of Sclerocheilus minutus, Grube, from Sark. X 360.

4. Fifth foot of Euspio Gravieri, Mel. x 40.

4 a. Tenth foot of the same showing gland. X 40.

6. Head and anterior region of Spio atlanticus, contracted in spirit. x about 40.

7. Posterior foot of Aonides oxycephala, Sars. X 200.

8. Portion of the fifth foot of Polydora Caulleryi, Mesnil. x 360.

9. Portion of the fifth foot of Polydora guadrilobata, Jacobi. X 360.

10. Portion of the fifth foot of Polydora flava, Claparede, St. Andrews, with peculiar

spear-shaped bristles accompanying the hooks. X 360.

11. Bristles of Polyophthalmus pictus, Dujardin, arising from the setigerous process.

X 224.

12. Anterior foot of Spio G. The specimen was crushed, but the foliaceus lamella is

indicated. x 360.

13. Ventral bristles of the twentieth foot of Cirratulus caudatus, Levinsen. X 133.

14. Lateral view of the anterior region of Isoeirrus DA. Enlarged.

14 a. Cephalic plate of the same seen from the dorsum. Enlarged.

15. Profile of cephalic region of Leiochone borealis, Arwidsson, from North Uist.

Enlarged.

15 a. Anal region of the foregoing. Enlarged.

16. Leiochone borealis, Arwidsson, from the North Sea. A prolapse of the gut has

occurred at the vent. Enlarged.

17. Posterior end of the same, from St. Magnus Bay, 1887. Enlarged.

18. Leiochone (Clymene) ebiensis, Aud. & Edw. Slightly enlarged.

19. Cephalic region with 2 bristled segments of Leiochone Johnstoni, McL, from Loch

Alsh. Enlarged.
19 a. Anal region of the foregoing. Enlarged.

20. Cephalic and anterior regions of Praxillella V, off Cape Guardia, ' Porcupine,' 1870.

Enlarged.

21. Anal region of Praxillell 'a pr deter missa, Malmgren. Enlarged.

22. Lateral view of the head and anterior region of Pseudoclymene CErstedi, Claparede.
22 a. The same seen from the ventral surface. Enlarged.

23. Anal region of Hetero clymene robusta, Arwidsson. Enlarged.

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PLATE CI.

Fig.

1. Head and anterior region of Girratulispio Gaulleryi, Mcintosh. Enlarged.

2. Head and anterior region and portion of succeeding region of Magelo?ia papillicornis,

F. Midler. Enlarged.
2 a. Dorsal lamella of an anterior foot viewed from above. Magnified.
2 b. Ventral lamella from the same region viewed from above. Magnified.

2 c. Lamellge of the foot of the fifth segment of the posterior region : c, tuft of bristles ;

s, dorsal and ventral hooks ; fi, muscles of the foregoing ; hp, hypoderm.
Magnified.

3. Head and anterior region of Pceciloclisetus serpens, Allen. (After Dr. Allen.) Enlarged.

3 a. Posterior region with caudal termination of the same. (After Dr. Allen.) Enlarged.

4. Head and anterior region of JJasybranchus caducus, Grube (in spirit). Enlarged.

4 a. Segment of the middle region with branchise. Enlarged.

5. Head of Praxillella gracilis, Sars, with proboscis extruded. Enlarged.

5 a. Caudal funnel of the foregoing. Enlarged.

6. Cephalic region of Asychis Jeffreysii, McL, off Cape Finisterre 'Porcupine,' 1870.

Enlarged.

6 a. Cephalic plate of the foregoing from the dorsum. Enlarged.

7. Cephalic region in a small specimen of Asychis biceps, Sars. Enlarged.

7 a. Caudal extremity of the foregoing. Enlarged.

8. Tube of Owenia fusiformis, Delle Chiaje, from a living example between tide-marks

at Lochmaddy. Slightly enlarged.

8 a. Branchiae of an example of the same in a state of contraction. Enlarged.

8b, 8c, and 8d. Three views showing various changes in the lip-organ of this species.

Enlarged.
8 e. Sketch showing how a specimen protected itself in a fragment of a tube a third of

its length. Photo by Mr. Arnold Watson.
8f. Spindle-shaped contracted tube with annelid internally. From a photograph by

Mr. Arnold Watson.

9. Anal funnel of Pseucloclijmene OEJrstedi, Claparede. Enlarged.

10. Caudal hook of Polydora hopleura. X oc. 4, obj. A w, 3 in. draw-tube.

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PLATE Oil.

Fig.

1. Ventral bristle of Sclerocheilus minutus, Grube. X oc. 2, obj. D., with draw tube.

2. Strong ventral bristle of Brada villosa, H. Rathke. ' Knight Errant.' X oc. 2, obj. D.

2 a. Ventral bristles of the third series of the foregoing. x oc. 2, obj. A.

3. Bristle of Flabelligera BusJcii, Mel. X oc. 2, obj. A.

3 a. Hook of the foregoing, x oc. 2, obj. A.

3 b. Tip of the hook more highly magnified. x 350 diam.

4. Bristle of a closely allied Atlantic form dredged by the 'Porcupine,' 1869 (var. affirtis).

X oc. 2, obj. A.

4 a. Hook of the foregoing. X oc. 2, obj. D.

5. Capillary bristle of Chsetopterus variopedatus, Renier, with terminal hook. Prom St.

Andrews. X oc. 2, obj. D, with draw-tube.

5 a and 5 a. Capillary bristles of a specimen from the coast of Cornwall. X oc. 2, obj. A,

with draw-tube.
5 b. Bristle of the foregoing species with slightly developed spear-tip. X oc. 2, obj. A,

with draw-tube.
5 c. Similar form from St. Andrews. X oc. 2, obj. A, with draw-tube.
5 d. Further modifications of the paddle-like tip from Cornwall. X oc. 2, obj. A.
5 e and bf. Knife-like bristle from the same species. (Guernsey and Herm.) X oc. 2,

obj. A.
5 q. General arrangement of the bristles in the foot of an example of the same species

from South Africa, x about 60.

5 h and 5 i. Tooth-like bristles from the fourth foot of G. variopedatus, the former from

Cornwall, the latter from Herm. X oc. 2, obj. D.
hj and 5 h. Anterior hooks of the same species from St. Andrews. X oc. 4, obj. D.

6 and 6 a. Paddle-like bristles of Phyllochsetopterus gracilis, Grube, off Cape Einisterre,

' Porcupine,' 1870. Reduced from drawing made under X oc. 2, obj. D.

6 b. Knife-like bristle of the same species. X oc. 2, obj. D.

7 and 7 a. Capillary bristles of Nerine foliosaa, Sars. X 180 diam.
7 b. Hook of the foregoing in lateral view. X oc. 4, obj. D.

7 c. The same in antero-posterior view. X oc. 4, obj. D.

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PLATE CIII.

Fig.

1. Bristle of Ophelia limacina, H. Rathke. x oc. 4, obj. D.

2. Bristle of a young example. X oc. 4, obj. F.

3. Bristle of Ammotrypane aulogaster, H. Rathke. X oc. 4, obj. D.

4. Bristle of Travisia Forbesii, Johnston. X oc. 2, obj. F.

5. Bristle of Eumenia crassa, (Ersted. x oc. 2, obj. F.
5 a. Forked bristle of the same. X oc. 2, obj. D.

5 b. Forked bristle of Eumenia (Lipvbranchus) Jeffrey sii, Mel. X oc. 2, obj. D.

6. Capillary bristle. X oc. 4, obj. D.

7. Capillary bristle of Scalibregmainflatum, H. Rathke. X oc. 4, obj. D.
7 a. Tip of the foregoing more highly magnified.

7 b. Forked bristle of the same species, x oc. 4, obj. F., with full draw-tube.

8. Simple capillary bristle of Sclerocheilus minutus, Grube. X oc. 4, obj. D, with full

draw -tube.

8 a. Winged bristle of the foregoing, second foot. X oc. 4, obj. D.
8 b. Bifid bristle of the same species. X oc. 4, obj. D.

9. Falcate bristle of Ephesia gracilis, H. Rathke. x oc. 4, obj. D.

10. Jointed bristle of Ephesia peripatus, Johnston, from Guernsey. x oc. 4, obj. D, with

full draw-tube.

11, 11a, 11/?, and lie. Tips and base of the dorsal bristles of Arenicola marina, L.

X 280 diam.

11 d. Crotchet of the foregoing. X oc. 4, obj. D.

12 and 12 a. Tips of the dorsal bristles of Arenicola, branchialis, Audouin & Edwards,

showing fine spikes. X oc. 2, obj. D.
12b and 12c. Hooks of the same species, the former a larger and the latter a smaller
specimen. 12 b, X oc. 4, obj. D. 12 c, X oc. 4, obj. D, with draw-tube.

13 and 13 a. Tips of the dorsal bristles of Arenicola ecaudata, Johnston. X oc. 2, obj. D.

13 b. Hook of the foregoing, x oc. 4, obj. D, with 2 in. draw-tube.

14 and 14 a. Bristles of Ammotrypane eylindricaudatns, Hansen, c Porcupine,' 1870,

X oc. 4, obj. D, with 2 in. draw-tube.

15. Bristle of Armandiella Tiobertianse, Mcintosh. x 360.

16. Bristles of Cirratulusbioculatus, McL, Shetland, 1867. X 360.

17. Bristles of Cirratulid Z. ' Porcupine,' 1870. X 360.

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PLATE CIV.

Fig.

1. Ordinary bristle of Stylarioides plumosa, 0. F. Miiller. X oc. 2, obj. D.

1 a. Bristle from a specimen dredged in the Gulf of St. Lawrence, Canada, x 350.

1 b. Portion of a shaft of a British bristle of the same. X oc. 4, obj. D.

1 c. Tip of a hook of the same from the Gulf of St. Lawrence. x 40.

1 d. Hook of an example from the Gulf of St. Lawrence. x oc. 4, obj. A.

2. Hook of Stylarioides diplochaitos, Belle Chiaje, from Naples, x oc 4, obj. A, with full

draw-tube.

3. Bristle of Stylarioides flab ellata, Sars, off Bergen. X 50 diam.
3 a. Anterior ventral bristle of the same. X 350.

3 b and 3 c. Hooks of the foregoing. X oc. 4, obj. A.

3 d. Peculiarly modified articulation where shaft and tip meet in the same form. x oc.

4, obj. A.
3 e. Posterior hook of the foregoing. X oc. 4, obj. D.

4. Bristle of Stylarioides hirsuta, Hansen. x oc. 2, obj. A, with draw-tube.

5. Bristle of Stylarioides Sarsi, McL, from the ' Porcupine ' 1870, off Cape Sagres.

X oc. 2, obj. A.
5 a. Basal portion of a dorsal bristle of the foregoing. X 350 diam.
5 b. Ventral hooks of the fourth foot of this species. Similarly magnified.
5 c. Tip of hook-like bristle from the postero-lateral region of the same. X oc. 2, obj. A.
5 d. Well-developed posterior hook of the foregoing. x oc. 2, obj. A.

5 e. Posterior hooks of the same. X oc. 2, obj. A.

6. Articulated bristle of Stylarioides arenosa, Webster, with curved tip. X oc. 2, obj. D.
6'. Straighter bristle of the same. Similarly magnified.

6 a. Portion of a bristle of the third set with wide articulations. x oc. 2, obj. D.

6 b and 6 V . Portions of another bristle of the third set with narrow articulations.

6 b X oc. 2, obj. D. 6 b' more highly magnified.
6 c. Compound tip of a ventral bristle of the third series resembling the arrangement in

Sigalion and Sihenelais. x oc. 2, obj. D.

6 d. Hook of the foregoing from fortieth to fiftieth foot. X oc. 2, obj. D.

7. Bristle of Flabelligera affinis, Sars. X oc. 4, obj. D.

7 a. Hook of the same. X oc. 2, obj. D.

7 b. Tip of a hook more highly magnified to show structure.

8. Bristle of Flabelligera BusMi, Mcintosh. x 90 diam.

8 a. Portion of a bristle of the same with wide articulations. X 350 diam.

9. Fragment of a frontal bristle of Stylarioides glauea, Mgrn. X 350 diam.

10. Lateral view of hook of Streblospio Shrubsoli, after Miss F. Buchanan. X 400 ?

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PLATE CV.

Fig.
1 and 1 a. Capillary bristles of Nerine cirratulus, Delle Chiaje. x oc. 4, obj. D.
1 b. More slender type of capillary bristle from the same species, x oc. 4, obj. D.

1 c. Lateral view, and 1 d, antero-posterior view of a hook of the foregoing. x oc. 4,

obj. D.

2 and 2 a. Bristles of Scolecolepis vulgaris, Johnst. X oc. 2, obj. D.

2 b. Hook of the foregoing. x oc. 2, obj. D.

3. Winged bristle of Scolecolepis fuliginosus, Claparede. x oc. 2, obj. D, with draw-

tnbe.

3 a. Hook and dotted bristle of the twenty-fifth foot. X oc. 2, obj. D.

3 b. Hook of the foregoing, x oc. 2, obj. D.

4. Winged bristle of Scolecolepis cirrata, Sars. x oc. 2, obj. D.

4 a. Hook of the same, x oc. 4, obj. D, with full draw-tube.

5. Capillary bristle of Spionid Z. H.M.S. ' Triton/ 1883. x oc. 4, obj. D.

5 a. Hook of the same. X oc. 4, obj. D.

6. Winged bristle of Scolecolepis I. < Porcupine,' 1869. x oc. 4, obj. D.

7 and 7 a. Winged bristles of Scolecolepis lamellata, McL 'Porcupine,' 1870. (Vide

Plate XCVI.) x oc. 2, obj. D.
8. Winged bristle of Euspio Gravieri, McL St. Peter Port, Guernsey, x oc. 2, obj. D.

8 a. Bristle of the foregoing with broader tip. X oc. 2, obj. D.

8 b. Hook, behind the middle of the body. x 360.

9 and 9 a. Capillary bristles (with irarrow wings) of Spiophanes bombyx, Claparede.

X oc. 4, obj. D.
10 and 10 a. Capillary bristle of Aonides oxycephala. x oc. 4, obj. D, with full draw- tube.

10 b. Hook (middle of body) of the foregoing from Herm. x oc. 4, obj. C.

11. Winged bristle of the tenth foot of Euspio Mesnili, McL ( = S.filicomis, Malmgren ?).

X oc. 2, obj. D, with draw-tube.

11 a. Winged and minutely dotted bristle of the twenty-fifth foot of the same. X oc. 2,

obj. F.
11 b. Hook of the foregoing. X oc. 4, obj. D.

12. Hook of Spio G. X oc. 4, obj. F, with 2 in. draw-tube.

13. Hook of Spio filicomis, 0. Fabricius, from the fiftieth foot. X oc. 4, obj. D.

14. Hook of (?) Spio atlanticus, Langerhans. X oc. 4, obj. D.

16. Ventral edge of twenty-fifth foot of Euspio Mesnili, McL x 360.

17. Curved simple bristle of the first foot of Poecilochsetus serpens, Allen. X oc. 4, obj. D.

18. Hook of Heterocirrus viridds, Langerhans. X oc. 2, obj: D, with 2 in. draw-tube.

19. Ventral bristles of anterior region of Cirratulus bioeulatus, McL Shetland, 1867.

X 360.

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PLATE CVI.

Fig.
1. Upper curved bristle of the fourth foot of Pygospio elegans, Claparede. x oc. 4, obj.F.
1 a. Upper capillary bristle of the foregoing with a very slight wing. X oc. 2, obj. D.
1 b. Winged bristle in lateral view, from Whitecliffe Bay, Isle of Wight. X oc. 4, obj. C.
1 c. Winged bristle of the fourth foot seen antero-posteriorly. x oc. 4, obj. F.
1 d. Hook of the same, from Whitecliffe Bay. X oc. 4, obj. C.

1 e. Hook from the ninetieth foot. X oc. 4, obj. F.

2 and 2 a. Front and lateral views of the capillary bristles of Polydora ciliata, Johnston.

x oc. 4, obj. D.
2 b and 2 c. Different view of the great hooks of the fifth segment of the same species.
X 350 diam.

2 d. Hook of the foregoing, x 350 diam.

3. Front view of one of the shorter capillary bristles of Polydora flava, Claparede. X

oc. 4, obj. D.

3 a. Lateral view of one of the longer bristles with narrow wings. X oc. 4, obj. D.
3 b. Great hook of the fifth segment. X oc. 4, obj. D.

3 c. Typical ventral hook, x oc. 4, obj. D.

4. Dorsal bristle, with narrow wings, of Polydora qimdrilobata, Jacobi, var. Mesnili.

X oc. 4, obj. D.

4 a. Bristle of the fifth foot, x oc. 4, obj. D.

4 b. Great hook of the fifth segment of the same. X oc. 4, obj. D.

4 c. Ventral hook of the same species. X oc. 4, obj. D.

5. Winged dorsal bristle of Polydora Oaulleryi, MesniL x oc. 4, obj. F.

5 a. Bristle of the same species with broader tip and marked curve backward. X oc. 4,

obj. F.
5 b and be. Great hooks from the fifth segment. x oc. 4, obj. D.

5 d and 5 d'. Ventral hooks of the foregoing from Lochmaddy. X oc. 4, obj. F, with

draw-tube.

6. Dorsal bristle of Polydora hoplura, Claparede, with narrow wings. X oc. 4, obj. F.

6 a and 6 b. Tips of two of the great hooks of the fifth segment viewed differently,

Lochmaddy, North Uist. X oc. 4, obj. F.

6 c. Ventral hook of the foregoing. X oc. 4, obj. F.

7. Inferior bristle, with slight wings from the anterior region of Magelona papillicornis,

F. Muller. x 350.

7 a. Upper bristle of the same region. x 350.

7 b, 7 c, 7 d, 7 e. Various bristles of the ninth segment of the same species. The enlarged

tip appears to be a modification of the wing which is present in all. X 350.
7 f. Lateral view of a hook in a spirit-specimen. X 350.
7 g. Another view of a hook showing several points. X 350.

7 h. Hook from a living specimen. X 350.

8. Anterior dorsal capillary tuft of Spio B. X 200.

8 a. Posterior ventral bristle of the same, x 360.

9. Ventral dotted bristle of Spiophanes bombyx, Claparede. x 360.
10. Dorsal tuft of bristles from the middle of Spio G. X 200.

Pl.CVI.

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f f P.W.KTrap imp

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PLATE CVIL

Fig.

1. Finely serrated dorsal bristle of Cirratulus tentacul at/us, Montagu. X oc. 4, obj. D.

1 a. Hook of the same. X oc. 4, obj. D.

2. Dorsal bristle of Cirratulus cirratus, 0. F. Midler. X oc. 4, obj D.

2 a. Curved and serrated bristle of the same. X oc. 4, obj. D.

2 b. Smaller and more curved (less worn) ventral hook. x oc. 2, obj. D, with draw-
tube.
2 c. Larger hook of the same. X oc. 2, obj. D, with 1 in. draw-tube.

3. Hook of Cirratulus Chiaji, Mel. x oc. 4, obj. F.

4. Dorsal bristle of Ghsetozone setosa, Malmgren. x oc. 2, obj. F.

5. Dorsal bristle of Chsetozone zetlandica, Mel. X oc. 2, obj. F.
5 a. Ventral hook of the same. X oc. 2, obj. D.

7 and 7 a. Average examples of the tips of the ventral bristles of Dodecaceria concharum.

See 'Ann. Nat. Hist.,' ser. 4, vol. ii, p. 286. x 350.
7 b. Entire hook. X oc. 2, obj. D.
7 c. Anterior hook. X oc. 2, obj. D.
7 d. Posterior hook in which the spoon-like cavity at the tip is longer. x oc. 2, obj. F.

7 e. Anterior bristle. X oc. 4, obj. F.

8. Dorsal bristle of Heterocirrus ater, De Quatrefages. X oc. 2, obj. D.

8 a. Ventral hook of the same in lateral view, x oc. 2, obj. D.

8 b. Antero-posterior view. x oc. 2, obj. D.

9. Dorsal bristle of Notomastus later ice/us, Sars. X oc. 4, obj, D.

9 a. Hook of the foregoing. X oc. 4, obj. D, with 2 in. draw-tube.
9 b. Tip of a hook more highly magnified. x oc. 4, obj. F.

10. Dorsal bristle of Capitella capitata, 0. Fabricius. X oc. 4, obj. D.
10 a. Hook. X oc. 2, obj. F.

11. Hook of Capitella capitata, Fabr. From the East Hocks, St. Andrews. X oc. 4,

obj. F.

12. Hook of Capitella capitata, var. with eyes, from Lochmaddy. X oc. 4, obj. F.

13 and 13 a. Bristles of variety of Notomastus latericeus, Sars, off Cape Finisterre.
' Porcupine,' 1870. x oc. 2, obj. D.

13 b. Hook of the same. X oc. 2, obj. D.

14. Bristle from the seventh foot of Cirratulispio Ca/ulleryi, Mcintosh. x oc. 4, obj. D,

with full draw -tube.

14 a. Spine-like bristle from the first segment of the second region of the foregoing.

X oc. 4, obj. D.

15. Dorsal bristle from the anterior region of TJasybranchus caduciis, Grube. X oc. 2.

obj. D.

15 a. Hook of the foregoing, x oc. 4, obj. F.

16. Hook of the first foot of Spiophanes bombyx, Claparede. X 224.

17. Feathery bristle of the twentieth foot from the posterior end of Poecilochdetus serpens,

Allen. X oc. 4, obj. D.

18. Hook of Heterocirrus viridis, Langerhans. X oc. 4, obj. D.

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PLATE CVIIL

Fig.

1. Hook of Lumbriclymene minor, Arwidsson. 'Porcupine,' 1870. x 390.

2. Hook of Notoproctus (fragment), off Cape Ghiardia. ' Porcupine,' 1870. X 360.

3. Winged bristle of Rhodine gracilior, Tauber. X oc. 2, obj. D.
3 a. Simple capillary bristle. X oc. 2, obj. D.

3b. Hook of the foregoing. X oc. 4, obj. F.

3 c. Hook of Rhodine Loveni, Malmgren. x oc. 4, obj. F.

4. Hook of Isocirras planiceps, Sars, near the posterior end of the body. X 360.

5. Winged bristle of Leiochone borealis Arwidsson. x oc. 2, obj. D, with 2 in. draw-tube.
5 a. Simple capillary bristle (with serrated edge). X oc. 4, obj. D, with 1 in. draw-tube.
5 c. Peculiar bristle with serrated edge, commencing with larger spikes. X oc. 4, obj. D.
5 d and 5 e. Hooks of the foregoing. X 350 diam.

6. Hook of a variety (?) from the North Sea. x 380.

7. Winged bristle of Leiochone Johnstoni, Mcintosh, from Loch Alsh. x oc. 4, obj. A,

with full draw-tube.
7 a. Simple capillary bristle. X oc. 4, obj. A, with l\ in. draw-tube.
lb. Hook of the same, x 133.
7 c. The foregoing more highly magnified. x oc. 4, obj. D.

8. Hook of Praxillella affinis, Sars. St. Magnus Bay, 1867. x 360.

9 and 11. Hooks of Praxillella? No gular bristles. ' Porcupine,' 1870. 994 fathoms.
X 360.
10. Bristles of Pseudoclymene quadrilobata, Sars. X 200.
10 a. Hook of the foregoing from the eighth segment. X 360 diam.

12. Winged bristle of Pseudoclymene (Erstedi, Claparede, from the eighth bristle-bundle.

X oc. 4, obj. D, with 1 in. draw-tube.
12 a. Capillary bristle. X oc. 4, obj. D.
12 b. Spiked bristle. X oc. 4, obj. D, with full draw-tube.
12 c. Hook of the same. X 360 diam.

13. Hook of Asychis Jeffrey sii, Mcintosh, off Cape Finisterre. ' Porcupine,' 1870. X 200.

14. Hook of Asychis biceps ?, Sars, from Loch Linnhe. x 350.

15. Stout tooth-like bristle of fourth foot of Phyllochsetopterus gracilis, Grube. X oc. 2,

obj. A.

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PLATE CIX.

Fig.

1. Hooks of Rhodine gracilior, Tauber, as published in 1869. X 350.

2. Dorsal bristle of Nicomache metadata, Arwidsson. X oc. 4, obj. D.

2 a. Spine from the anterior region of the same. X oc. 4, obj. A.

3 and 3 c. Dorsal bristles of Proclymene Mulleri, Sars. x oc. 4, obj. D.

3 b and 3 d. Hook of the foregoing. 3 b X about 90 diam.; 3 d x oc. 4, obj. D.

4. Bristle of Heteroclymene robusta, Arwidsson. x oc. 4, obj. D, with draw-tube.

4 a. Hook of the foregoing. X oc. 4, obj. D.

5. Anterior spine of Pseudoclymene quadrilobata, Sars. X oc. 4, obj. A, with draw-tube.

6. Tip of a spine of Isocirrus planiceps, Sars, from the Hebrides. X oc. 4, obj. A, with

draw-tube.
6 a. Hook of the same. X oc. 4, obj. D.
9. Hook of Isocirrus DA from Montrose Bay. X oc. 4, obj. A.

10. Capillary (winged) bristle of Leiochone (Clymene) ebiensis, Audouin & Edwards.

X oc. 4, obj. D.
10 a. Anterior hook in which development is incomplete. From Jersey. X oc. 4, obj. D.

10 b. Completely developed hook, x 350.

11. Bristle (with narrow wings) of Leiochone clypeata, De St. Joseph. x oc. 4, obj. D,

with draw- tube.

11 a. Hook of the foregoing from the tenth segment. X oc. 4, obj. D.

12. Dorsal bristle of Praxillella gracilis, Sars. X oc. 4, obj. A, with full draw-tube.

12 a. Hook of the same. X oc. 4, obj. D, with full draw-tube.

13 and 13 a. Dorsal bristles of Praxillella prmter mis sa, Malmgren. x oc. 4, obj. D.
13 b. Hook of the foregoing, x oc. 2, obj. D.

13 a. Hook of the last row. x oc. 4, obj. D, with draw-tube.

14. Tuft of dorsal bristles from the twentieth foot of Girratulus caudatus, Levinsen.

X 133.

14 a. Posterior hook-like bristle of the same. X oc. 4, obj. A, with 2 in. draw-tube.

15. Dorsal bristle of Prionospio Malmgreni, Claparede. X oc. 4, obj. D.

15 a. (The upper fig. 15 in the plate) another with more distinctly granular contents.

X oc. 4, obj. D.
15 b. Hook of the foregoing, x oc. 4, obj. D.
3 6. Spinous bristle of Maldane Sarsi, Malmgren. x oc. 4, obj. D.

PI. CIX.

3.

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AiJ.W.&WCK.ael

PLATE CX.

Fig.

1. Capillary bristle of Isocirrus DA from Montrose Bay. X oc. 2, obj. A.
1 a. Hook of the foregoing, x oc. 4, obj. D.

2. Hook of Proclymene Millleri, Sars, from the coast of Northumberland. X oc. 2, obj. A.

4. Capillary bristle of Axiothella catenata, Mgrn. X oc. 4, obj. D, with draw-tube.

4 a. Hook of the same. X oc. 4, obj. D.

5. 5 a. Dorsal bristles of Arwidssonia zetlandica, Mel. X oc. 2, obj. A, with draw-tube.

5 b. Larger spine of the second series. X 420.
5 c. Middle spine of the same series. X 420.

5 d. Hook of the foregoing. x 420.

6. Dorsal bristle of Asychis biceps, Sars. X oc. 4, obj. A, with draw-tube.

6 a. Hook of the same. X oc. 4, obj. A, with full draw-tube.

7. Dorsal bristle of Asychis Jeffreysii, Mel. X oc. 4, obj. A, with draw-tube.
la. Portion more highly magnified. X oc. 4, obj. D.

7 b. Hook of the same. X oc. 4, obj. D.

8 and 8'. Spiked and simple bristles of Maldane Sarsi ? X oc. 4, obj. D.

8 a. Portion of the spiked bristle more highly magnified. X oc. 4, obj. F.

8 b. Winged bristle of the second foot with peculiar curvature. X oc. 4, obj. D.

8 c. Hook of the foregoing. X oc. 2, obj. D.

9. Dorsal bristle of Owenia fusiformis, Delle Chiaje. X oc. 2, obj. F.

9 a. Hook of the same. X oc. 2, obj. F.

9 b. Hook of a Neapolitan example. X oc. 2, obj. F.

10. Dorsal bristle of Myriochele Heeri, Malmgren. X oc. 4, obj. F.
10 a. Hook of the foregoing. X oc. 4, obj. F, with full draw-tube.

11. Capillary bristle of Spio like D. Deep sea fishing off St. Andrews Bay, October,

1868. X 200.

13. Hook of Nicomache maculata, Arwidsson. X oc. 4, obj. D.

14. Dorsal bristle of Isocirrus planiceps, Sars. X oc. 2 obj. D, with draw-tube.

15. Posterior capillary bristle of Gsesicirrus neglectus, Arwidsson, from the third bristled

segment. X 440.
lb a. Tips of capillary bristle from the thirteenth segment of the same. X 500. (Both
after Arwidsson.)

PI. ex,

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PLATE CXI.

Fig.
1. Dorsal view of Prionospio Malmgreni, Claparede, from a specimen of fifty-six segments

forwarded by Mr. Southern. Enlarged under a lens.
1 a. Anterior region further enlarged. To this and the previous figure the tentacles have

been added from the figure of Gr. 0. Sars.
1 b. Lateral view of the same region to indicate the proportionally long branchiae.

Enlarged.
1 v. Anterior foot. x oc. 4, obj. A, with draw-tube.
3. Anterior region of Cirratulas caudatus, Levinsen, from Dunmanus Bay. The

specimen is incomplete. Enlarged.

5. Anterior region of OsesicArrus neglectus, Arwidsson, from the dorsum. Enlarged.
5 a. Lateral view of the snout of the same. Enlarged.

5 b. Lateral view of the posterior end. Enlarged.

5 c. Anal disc seen from the rear. Enlarged.

5 d. Feathered capillary bristle from the seventeenth segment of the foregoing. X

670 diam.
be. Hook of the same. X 530. (All from Arwidsson's memoir.)

6. Cephalic plate of Pseudoclymene quadrilobata, Sars, from the Outer Skerries, Shetland.

Enlarged.
7. 1 Anterior region of an imperfect example of Myriochele Heeri (?) from Canada.
Enlarged.

7 a. 1 Anterior region of Myriochele Heeri, Malmgren, from Clew Bay, Ireland ; completed

with the aid of Malmgren's figure. Enlarged.

8. Anterior region of Maldane Sarsi, Malmgren. Enlarged.

8 a. Posterior end with anal projection. Enlarged.

9. Anterior end of Heterocirrvs viridis, Langerhans, from a specimen mounted by Major

Elwes. Enlarged.

9 a. Bristle of the foregoing. x oc. 4, obj. D, with draw-tube.

10. Hook of Heterocirrus caput-esocis, De St. Joseph, from a specimen sent by Major

Elwes. X oc. 4, obj. D, with draw-tube.

11. Simple bristle of the first foot of Poecilochdstus serpens, Allen. X oc. 4, obj. D.
11 a. Second foot of the foregoing. X 40 diam. ?

11 b. Posterior hooks from the dorsal division. After Dr. Allen. X 100.
11 c. Broadly feathered bristle, x oc. 4, obj. D.
11 d. More slender form of the same kind. X oc. 2, obj. D.

lie. Peculiar soft spinuous ("membranous") form from the anterior third (about
twentieth foot), x oc. 2, obj. D.

1 By an error the figure is numbered 2 in the plate.

PI. CXI.

AlLW.aeLRd.il ?> EJ. A.Tig. 5-5«LArwidasc

fa P.W.EIrap impr.

^..

MONOGRAPH

OF THE

BRITISH
MARINE ANNELIDS.

: . VOL. I.
NEMERTINEA ; *'

AND

POLYCH^ETA-
AMPHINOMLD^ TO SIGAIIONIMl.

BY

WILLIAM CARMICHAEL McINTOSH, M.D.Edin.,

L.R.C.S.E., LL.D., F.E.S., F.K.S.E., F.L.S., C.M.Z.S., etc.,

PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ST. ANDREWS ; DIRECTOR OF THE UNIVERSITY

MUSEUM AND OF THE GATTY MARINE LABORATORY; SUB-COMMISSIONER AND SCIENTIFIC REPORTER

TO THE TRAWLING COMMISSION UNDER LORD DALHOUSIE, 1883-1885; SCIENTIFIC MEMBER

OF THE FISHERY BOARD FOR SCOTLAND, 1892-1895.

LONDON :

PRINTED FOR THE RAY SOCIETY,

AND SOLD BY

DULAU & CO., LTD., 37, SOHO SQUARE, W.

1873-1900.

PRINTED BY ADLARD AN1) HON, LONDON AND DORKING.

CONTENTS OF VOL. I

NEMERTINEA.*

PAGE

ENOPLA.

.MPHIPORIDJ]

Lineid^j (continued)
Cerebratulus

Amphiporus
Tetrastemma

. 155
. 164

Mi crura
Meckelia .

Prosorhochmus .
Nemertes ....

. 174
. 176

Carinellid^

Oarinella .
Valencinia .

ANOPLA.

Cephalothricim]

INEIDJC

Lineus ....

. 181

Cephalothrix

Borlasia ....

. 193

Appendix .

PAGE

194
196
202

203

207

208
213a

POLYCH^ETA.

PAGE

PAGE

AMPHINOMIDiE . . . . . .219

Polynoida] (continued) —

Paramphinome

221

Antinoe . . . . . .365

Eurythoe .

224

Phyllantinoe

. 370

Spinther

227

Scalisetosus

. 372

Euphrosyne
Aphroditid^

233
240

Malmgrenia

Halosydna

Polynoe

. 379

. 384
. 389

Aphrodita .

241

Enipo

. 395

Lastmatonice

258

Acholoe

. 396

Hermione .

264

Accetjd^] .

. 399

POLYNOID^

270

Panthalis .

. 400

Lepidonotus

273

Gattyana .

285

SlGALIONlD^

. 406

Eunoa

291

Sthenelais .

. 407

Lagisca

298

Eusthenelais

. 425

Acanthicolepsis .

*

311

Sigalion

. 427

Harmothoe

313

Leanira

. 434

Evarne

. 353

Pholoe

. 436

* Not

inclu<

ling t

ie Int

roduction,

for which see pp. ix-xii of !

Parti

A

MONOGRAPH

OF THE

BRITISH
MARINE ANNELIDS.

VOL. II.
POLYCH^TA-
NEPTHYDIDJ3 TO ARICIIME.

BY

WILLIAM CARMICHAEL McINTOSH, M.D.Edin.,

L.R.C.S.E., LL.D., F.R.S., F.E.S.E., F.L.S., C.M.Z.S., V.P. LIT. & PHIL. SOC. St. AND., V.D., etc.,

PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ST. ANDREWS ; DIRECTOR OF THE UNIVERSITY

MUSEUM AND OF THE GATTY MARINE LABORATORY; SUB-COMMISSIONER AND SCIENTIFIC REPORTER

TO THE TRAWLING COMMISSION UNDER LORD DALHOUSIE, 1883-1885 ; SCIENTIFIC MEMBER

OF THE FISHERY BOARD FOR SCOTLAND, 1892-1895 ; MEMBER OF THE

IRISH INLAND FISHERIES COMMISSION, 1899-1901.

LONDON :
PRINTED FOR THE RAY SOCIETY,

AND SOLD BY

DULAU & CO., LTD., 37, SOHO SQUARE, W.

1908-1910.

PRINTED BY ADLARD AND SON, LONDON AND DORKING.

CONTENTS OF VOL. II

POLYC1LETA (continued).

PAGE

PAGE

NEPHTHYDID2E .

1

Syllim] (continued) —

Nephthys .

6

Eurysyllis .24]

Autolytus .

209, 243

Phyllodocidju .

. 41

Amblyosyllis

. 224

Notophyllum

. 46

Myrianida .

. 228

Eulalia

. 50

Eumida

. 66

Nereids .

. 249

Anaitis

. 70

Micronereis

. 260

Phyllodoce
Glenetyllis .

. 74
. 94

Leptonereis
Nereis

. 263

. 267

Eteone
Mysta
Mystides

. 98
. 108
. 109

EcjNicnxE .

Staurocephalus
Ophryotrocha

. 343
. 352

. 364

(Alciopid^]

. 112)

Lumbriconereis
Zygolobus .

. 371
. 390

HeSIONTM]

Ophiodromus
Oastalia
Leocrates .
Dalhousiella
Magalia

. 114
. 116
. 120
. 130
. 134
. 136

Drilonereis
Arabella
Notocirrus .
On up his
Hyalinoecia
Eunice
Marphysa .

. 392
. 394
. .400
. 404
. 417
. 425
. 442

Syllime

Nerilla

. 137
. 147

Nematonereis
Lysidice

. 453

. 456

Exogone .

. 149

GrONIADIM5

. 460

Grrubea

. 234

Goniada

. 462

Xenosyllis .
Sphaerosyllis

. 155
. 156

Grlycinde

. 469

Microsyllis

. 159

GrLYCERID^E

. 471

Pionosyllis

. 161, 236

Glycera

. 477

Trypanosyllis

. 169, 240

Eusyllis

. 173

Ariciim] .

. 494

Odontosyllis

. 178

Aricia

. 497

Sylline

. 186

Scoloplos .

. 509

Syllis

. 188

Nainereis .

. 516

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4 RECENTLY ISSUED AND FORTHCOMING MONOGRAPHS.

For the Sixty-ninth Year, 1912.

94. A Bibliography of the Tunicata. By John Hopkinson. xii + 288 pp. 8vo. 1913.

95. The British Parasitic Copepoda. By Thomas and Andrew Scott. Yol. I (Copepoda parasitic
on Fishes, Part I), xii + 256 pp., 2 plates. 8vo. 1913.

For the Seventieth Year, 1913.

96. The British Parasitic Copepoda. By Thomas and Andrew Scott. Vol. II (Copepoda parasitic
on Fishes, Part II). xii -f 144 pp., 72 plates. 8vo. 1913.

For the Seventy-first Year, 1914.

97. A Monograph of the British Marine Annelids. By William Carmichael McIntosh. Vol. III.
Parti. — Text. Polychseta. Opheliidae to Ammocharidae. viii + 368 pp. Folio. 1915.

For the Seventy -second Year, 1915.

98. The British Freshwater Rhizopoda and Heliozoa. By James Cash and George Herbert
Wailes, assisted by John Hopkinson. Vol. III. The Rhizopoda, Part III. By G. H. Wailes.
xxiv + 156 H- 52 pp., 25 plates, and frontispiece. 8vo. 1915.

99. The Principles of Plant-Teratology. By W. C. Worsdell. Vol. I. Text and 25 plates. 8vo.
1915.

In Course of Publication,
The British Desmidiaceee. By the late W. West and Prof. G. S. West.

The British Freshwater Rhizopoda and Heliozoa. By the late James Cash and (after Vol. II)
G. H. Wailes.

The British Marine Annelids. By Prof. W. C. McIntosh.

The Principles of Plant-Teratology. By W. C. Worsdell. (Vol. II for 1916.)

Preparing for Publication.
The British Characese. By James Groves.
The British Centipedes and Millepedes. By W. M. Webb.
The British Earthworms. By the Rev. Hilderic Friend.
The British Hydrachnidas. By C. D. Soar and W. Williamson.
The British Ixodoidea. By W. F. Cooper and L. E. Robinson.
The Earwigs of the World. By Dr. Malcolm Burr.

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