PLATE I. 



Fig. 1. Carmiiui grata, n. gen. et sp. A ventral view of one specimen. Terminal proboscidian opening visible, as well 

 as the terminal ciliated groove, the lateral ciliated gi'oove and the ventral mouth, x about 3i. 



Fig. 2. Carinhm grata, n. gen. et sp. A side view of same specimen, showing the terminal ciliateil i^roove, the lateral 

 ciliated groove and the ventral nioutli. x about 3J. 



Fig. 3. Carinina grata, n. gen. et sp. A ventral view of another specimen, showing the tcrnanal i>robosriilian ojiening, 

 and the terminal ciliated gi'oove. x about 3A. 



Figs. 4, 5. Eupolia nippoiicnsis, n. sp. Right and left lateral view of one of the specimens. Natural size. 



Fig. 6. Eupolia australis, n. sp. Ventral view of the head. The mouth is verv small, the surface transversely wrinkled. 

 X 4. 



Fig. 7. Eupolia giardii, n. sp. Tip of head, viewed from above. x 2. 



Fig. 8. Eupolia giardii, n. sp. Dorsal view of the head, x 2. 



Fig. 9. Eupolia giardii, n. sp. Ventral view of the head. x 2. 



Fig. 10. Eupolia nyrponcnsis, n. sp. Another specimen, seen from below. The mouth is very small. 



Fig. 11. Ccrebratulus truncatus, n. sp. Side view. x 4. 



Fig. 12. Ccrchralulus truncatus, n. sp. Another specimen, ventral view of tip of head. x 8. 



Fig. 13. Ccrciratulus tiMcrorcn, n. sp. Ventral view of tip of head of New Zealand specimen. x 15. 



Fig. 14. Ccrebratulus macrorcn, n. sp. Lateral view of do. do. do. x 15. 



Fig. 15. Ccrebratulus angusticcps, n. sp. Lateral view of the anterior portion of the lacerated .specimen (1100 fathoms). 

 Part of the proboscis protrudes through a rupture in the body wall, x IJ. 



Fig. 16. Ccrebratulm longifisstis, n. sp. Lateral view. Natural size. 



Fig. 17. Ccrebratulus corrugatus, n. sp. Lateral view of a young specimen, x 2. 



Fig. 18. Ccrebratulus macrorcn, n. sp. Ventral view of the Japanese specimen. Natural size. 



Fig. 19. Ccrebratulus macrorcii, n. sp. Lateral view of do. do. do. 



Fig. 20. Amphipurtts moscleiji, i\. sp. One of the specimens, seen in perspective. Natural size. 



Fig. 21. Amphiporus moseleiji, n. sp. Anterior part, showing cephalic groove and subterniinal o])ening (indicated by a 

 cross fold) which leads into the proboscis and the intestine. Natural size. 



Fig. 22. Drc])cmophorus lankesteri, n. sp. Dorsal view. Natural size. 



Figs. 23-31. Pelagoneinc.rt.es rollestoni, H. N. M., after Moseley, who e.xidains the figures as follows : — 



Fig. 23. " Pelagoncmertes Rollestoni, enlarged, vieweil from the dorsal surface ; the proboscis is partly e.\-truded ; 

 Pr.S., sac of probo.scis ; IP., invaginated portion of proboscis within the proboscis s.ac : 6, superior 

 nerve ganglion ; JV.C, nerve cords; I", vascular trunk (the upper I' points to an enlargement of tlie 

 vessel lying .just posteriorly to the superior nerve ganglion) ; 7, intestine ; D, diverticula of intestine ; 

 A, anus ; 00, ovaries ; CM, circular muscles ; LM, lougituduial muscles. 



Fig. 24. '^ Pclagotiemerles Rollestoni, irora theventralsmface, x 2 diameters. 1, Mouth, with resophagus ; 2, partly 

 protruiled proboscis ; 3, nerve ganglia ; 4, nerve-cords ; 5, ovaries ; 6, digestive canal. The sheath of 

 the proboscis is seen through the body lying behind the digestive canal. 



Fig. 25. " Sketch of the proboscis-sheath and contained retracted proboscis, from the dorsal aspect. Retractor 

 muscles inserted into the commencement of the sheath. 



Fig. 26. " 1, One of the polygonal areas, enlarged, showing the WTiukles of integument producing the appearance. 

 2, Peculiar appearance of some of the folds of the integument. 



Fig. 27. " Reticular appear.ince of the integument observed in certain parts of the body. Natural size. 



Fig. 28. " a, Groups of brightly coloured fatty globules forming the contents of the divertie\ila of the intestine ; 

 b, portion of the vascular trunk, much enlarged. 



Fig. 29. " Portion of the invaginated ju'oboscis, much enlarged. «, E.vterual gelatinous layer ; b, internal muscular 

 layer ; c, cavity continuous with that of the proboscis-sac ; within these the invaginated portion of the 

 proboscis with the layers reversed ; b, internal muscular layer ; o, external gelatinous layer' ; d, central 

 tube tilled with dark amorphous matter (from the proboscis-sac ?). 



Fig. 30. " The nervous ganglia and ring, much enlarged. A, Superior ganglion ; 7J, inferior ganglion. 



Fig. 31. " One of the ovaries, enlarged. The dark irregular line on the centre represents what is probably an ajierture 

 for the discharge of ova." 



' '('his Ii;_'ure has been incorrectly lettereil Iiy tlte lithographer, aj>,i' furthest to (lie ri;:ht should hi' rj>,n. 



