244 BULLETIN OF THE MUSEUM OF COMPARATIVE ZOÖLOGY. 
Fig. 18. Marginella Smithii Verrill (Marginella aureocincta Stearns, t. Dall). Front 
view ; X 9 diameters. Off Cape Hatteras, N. C., U. S. F. C. Station 
` 2272, in 15 fathoms. Page 240. 
Fig. 19. Cingula Sandersoni Verrill. Front view; X 9 diameters. Off Cape Hat- 
teras, N. C., U. S. F. C. Station 2109, in 142 fathoms, 1883. Page 240. 
Figures 2, 9, and 10 were drawn by Mr. J. H. Emerton; Figures 3 to 5a and 16, 
by Mr. W. F. Hopson; and the others, by Mr. J. H. Blake. 
PLATE II. 
Fig. 1. dipho celatulus Verrill and Smith. Front view; X 3 diameters. East 
of George's Bank, U. S. F. C. Station 2077, in 1,255 fathoms, 1883. 
Page 218. 
Fig. 2. Pleurotomella (*) Dalli Bush. Froht view; X 4 diameters. Page 208. 
Fig. 2a. The same. Apical whorls; X 8 diameters. 
Fig. 3. Pleurotomella atypha Bush. Front view; X 2 diameters. Page 205. 
Fig. 4. Pleurotomella sulcifera Bush. Front view; X 2 diameters. Page 207. 
Fig. 5. Pleurotomella leptalea Bush. Front view; X 9 diameters. Page 208. 
Fig. 5a. The same. Apical whorls; X 8 diameters. 
Fig. 6. Cocculina reticulata Verrill. Side view; X 8 diameters. Off Chesapeake 
Bay, U.S. F. C. Station 2265, in 70 fathoms, 1884, Page 240. 
Fig. 6a. The same. A section to show style of sculpture; greatly enlarged. 
Fig. 7. The same. Interior view, with the animal; X 8 diameters. 
Fig. 8. Diaphana Lotte Bush. Top view; X 3 diameters. Page 222. 
Fig. 9. Thesame. Front view; X 3 diameters. 
Fig. 10. Margarita (Solariella) infundibulum Watson, var. Diomedee Verrill. Front 
view ; about natural size. South of Martha's Vineyard, U.S. F. C. 
Station 2221, in 1,525 fathoms, 1884. Page 218. 
Fig. 11. The same. View of base; about natural size. 
Fig. 12. Periploma abyssorum Verrill. Type specimen. Interior view; about natu- 
ral size. East of Banquereau, U. S. F. C. Station 2484, in 204 fathoms, 
1885. Page 227. 
Fig. 13. The same. Exterior view; about natural size. 
Fig. 14. Pandora Carolinensis Bush. Interior view of inferior valve; X 2 diam- 
eters. Off Cape Hatteras, N. C., U. S. F. C. Station 2113, in 15 fath- 
oms, 1883. Page 240. 
Fig. 15. The same. Interior view of superior valve; X 2 diameters. 
Fig. 16. Lucina Blakeana Bush. Dorsal view ; natural size. Page 281. 
Fig. 17. The same. Exterior view; natural size. 
Fig. 18. Myonera paucistriata Dall. Exterior view ; X 3 diameters. Page 227. 
Fig. 19. Limopsis plana Verrill. Type specimen. Interior view; X 2 diameters. 
Off Chesapeake Bay, U. S. F. C. Station 2098, in 2,221 fathoms, 1888. 
Fig. 20. The same. Exterior view; X 2 diameters. Page 240. 
Figures 2, 2a, 9, 5, ba, 8, 9, and 16-18 were drawn by Mr. J. H. Emerton; 
Figure 4, by Mr. W. F. Hopson; and the others, by Mr. J. H. Blake. 
