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COLLEGE ZOOLOGY 



FIG. 221. Order AMPHIPODA. A, Gammarus fasciatus, a fresh- water species. 

 B, Caprella geometrica, a marine species. (From Paulmier.) 



FIG. 222. FIG. 223. 



FIG. 222. Order STOMATOPODA. Squilla em pus a, the mantis shrimp. 

 (From Davenport, after Rathbun.) 



FIG. 223. Order DECAPODA. A, Callinectes hastatus, edible or blue crab. 

 (From Paulmier, after Rathbun.) B, Gelasimus minax, fiddler or soldier 

 crab. (From Paulmier.) 



