


, 
eu F nt Spee i ; 
A. E. Verrill— Catalogue of Marine Mollusca. 585 
_ Figure 3.—Poromya granulata, p. 564. typical form, interior view, x 4 diameters. 
5) Gulf of Maine. 3 
Figure 4.—The same. Outside of left valve. 
- Figure 5.—Arca pectunculoides, var. grandis, p. 574, x 4 diameters. Gulf of Maine. 
Figure 6.—Arca pectunculoides, p. 574, short, oblong form, x 4 diameters. 
Figure 7.—Crenella decussata, p. 578, x 12 diameters. 
Figure 8.—Dacrydium vitreum, p. 519, x 15 diameters. 
Figure 8a.—The same. Hinge, left valve. 
Figure 9.—Xylophaga dorsalis, p. 559, x 6 diameters. Casco Bay. 
Figure 10a.— Neera glacialis, p. 562, large form, with cartilage pit as in N. arctica, 
x 22 diameters. 
Figure 10b.—The same. Commonest variety. 
Figure 10c.—Necra obesa, p. 563, a common variety, x 2? diameters. Gulf of Maine. 
Figure 11.—Pecten Hoskynsi, p. 581, typical form, x 4 diameters. From off Nova Sco- 
tia, 190 fathoms. ; 
PLatTe LVII. 
Figure 1.—Pleurotoma Daili, p. 451, x 14. 
Figure 1a.—The same. 
Figure 2.—Pleurotoma Carpenteri, p. 452, x 4. 
Figure 3.—Pleurotomella Agassizii, p. 454, x 14. 
Figure 3a.—The same. Uncini, x 250. 
Figure 4.—Pleurotomella Pandionis, p. 456, natural size. 
Figure 4¢.—The same. Uncini, x 75. 
Figure 5.—Pleurotomella Packardit, 6 , p. 453, uncini from the original specimen, x 250. 
Figure 6.—Bela Gouldii, p. 463, x 3. 
Figure 6a.— Bela Gouldii, p- 465, uncini, x 75. 
Figure 7.—Bela hebes V., p. 459, x 4. 
Figure 8.—Bela pygmea V., p. 460, x 6. 
Figure 9.— Bela harpularia, p. 473, animal, natural size. 
Figure 10.—Bela concinnula, var. acuta, p. 470, uncini, x 75. 
Figure 11.—Bela concinnula, p. 468, (Mass. Bay, sta. 287), uncini, x 75. 
Figure 12.—Bela scalaris, with animal, p. 471, Casco Bay, natural size. 
Figure 12a.—Bela scalaris, p. 471, 4 , uncini (sta. 293), x 75. 
Figure 13.—Bela cancellata, p: 475, uncini, x 75. 
Figure 14.— Bela incisula, uncini, x 125. 
Figure 16 and 16a.— Bela bicarinata, p. 481, Eastport. 1870, x 3. 
Figure 17.—Taranis pulchella V.,-p. 487, shell. Original type, x 14. 
Figure 18.—Taranis Mérchiz, p. 486, shell, x 6. 
Figure 19.—Sipho celafus, p. 506, shell, x 3. 
Figure 194.—The same. Radula, x 75. 
Figure 20.—Sipho parvus, p. 504, shell, x 3. 
Figure 20a.—The same. Part of radula, x 75. 
Figure 206.—The same. Operculum. . 
Figure 21.—Sipho pygmeus, é , radula, x 75. 
Figure 22.—Sipho glyptus, p. 505, radula, x 75. 
Figure 23.—Sipho Sabinii Gray, p. 503, apical whorls, x 6. 
