PLATE LX. 
PAGE 
Fig. 1. PoLYXicES (Neverita) nuPLicATUs (Say) 252 
1. Ventral view. St. Mary's River. 
Fig. 2. PoLYNicES (Lunatia) hemicryptus (Gabb) 252 
2. Ventral view. Jones Wharf. 
Figs. 3, 4. PoLYxicES (Lu.natia) heeos ( Say) 253 
3. Ventral view. Jones Wharf. 
4. Ventral view. St. Mary's River. 
Figs. 5a, 5b. Sigaeetus feagilis Conrad 255 
5a. Ventral view. Plum Point. 
5b. Dorsal view of the same specimen. 
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