PLATE I. 



Fig. 1. Carinina 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 groove and the ventral mouth, x about Si. 



Fig. 2. CanuiiM grata, n. gen. et sp. A side view of same specimen, showing the terminal ciliated groove, the lateral 

 ciliated groove and the ventral mouth, x about 3J. 



Fig. 3. Carinina grata, n. gen. et sp. A ventral view of another specimen, showing the terminal proboscidian opening, 

 and the terminal ciliated groove. x about 3J. 



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



Fig. 6. Eupolia auslralis, n. sp. Venti'al view of the head. The mouth is very small, the surface transversely wriukled. 

 X 4. 



Fig. 7. Eupolia giardii, n. sp. Tip of liead, 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 nippmiensis, n. sp. Another specimen, seen from below. The mouth is very small. 



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



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



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



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



Fig. 15. Cerebratulus angnsticeps, 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 li. 



Fig. 16. Cerebrattilus longifissu^, n. sp. Lateral view. Natural size. 



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



Fig. 18. Cerebratulus macrorcn, u. sp. Ventral view of the Japanese specimen. Natural size. 



Fig. 19. Cerebratulus macrorcn, n. sp. Lateral view of do. do. do. 



Fig. 20. Amphiporus moseleyi, n. sp. One of the specimens, seen in perspective. Natural size. 



Fig. 21. Amphiporus moseleyi, n. sp. Anterior part, showing cephalic groove and subterminal opening (indicated by a 

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



Fig. 22. DrepanopTionis lankcsteri, n. sp. Dorsal view. Natural size. 



Figs. 23-31. Pelagonemertes rollestoni, H. N. M., after Moseley, who explains the figures as follows : — 



Fig. 23. " Pelagoneinertes Rollestoni, enlarged, %iewed from the dorsal surface ; the proboscis is partly extruded ; 

 Pr.S., sac of proboscis ; IP., invagmated portion of proboscis within the proboscis sac : G, superior 

 nerve ganglion ; N.C., nerve cords ; T', vascular tnuik (the upper F points to an enlargement of the 

 vessel l>'iug .iust posteriorly to the superior nerve ganglion) ; J, intestine ; D, diverticula of intestine ; 

 A, anus ; 00, ovaries ; CJJ, circular muscles ; LM, longitudinal muscles. 



Fig. 24. "' Pelar/07iemertes Rollestoni, from the ventrnl surface, x 2 diameters. 1, Mouth, with oasophagus ; 2, partly 

 protruded 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 ^vrinkles of integument producing tlie appearance. 

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



Fig. 27. " Reticular appearance 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 diverticula of the intestine; 

 6, portion of the vascular trmik, much enlarged. 



Fig. 29. " Portion of the invagmated proboscis, much enlarged, a, External gelatinous layer ; b, interna] 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 ; a, e.xtemal gelatinous layer^ ; d, central 

 tube filled with dark amoi-phous matter (from the proboscis-sac ?). 



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



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

 for the discharge of ova." 



' This figure has been incorrectly lettered by tlie lithographer, a,b,c fm-thest to the right should be c,h,a. 



