Page:American Seashells (1954).djvu/133

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Plate 1 ― The Five Classes of Mollusks
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.