BOTTOM COMMUNITIES I 
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e SWANN 
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74 
REPRESENTATIVES OF THE BARE SAND COMMUNITY 
Fic. 72.—Straw-colored minnow (Notropis blennius) (from Forbes and. Rich- 
ardson). 
Fic. 73.—Snail (Pleurocera subulare) crawling over sandy bottom; slightly 
enlarged (photographed in aquarium). 
Fic. 74.—Large-mouthed black bass (Micropterus salmoides), juvenile; natural 
size (original). 
