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Gastropoda (a) Turnip Whelk, p. 237. |
Pelecypoda (b) Calico Clam, p. 416. |
Cephalopoda (c) Paper Nautilis, p. 485 | |
Amphineura (d) West Indian Chiton, p. 324. |
Scaphopoda (e) Dall’s Pacific Tusk, p. 327. |