MOLLUSCA 
277 
Fig. 242. —Top-shell ( Turbo marrno- 
rntrn); one fourth natural size. 
China seas. 
Fig. 243— Strombus gigaa, or “Winged- 
shellone fifth natural size. West 
Indies. 
Fig. 244. — 
Paludina , a Fresh-water 
Snail. 
Fig. 245.—Key-hole Limpet (Fissurella 
listen*). West Indies. 
Fig. 246 .— Ear-shell {H. tuberculata), and Dog-whelk (Xassa reticulata). England. 
