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PROCEEDINGS OF THE NATIONAL MUSEUM 



37, 123, 124; P. alcicornus at 25; Xd. formosus at 10, 21; and Xg. 

 instabilius at 7, 9, 11-13, 21, 22, 37, 123. In the Roanoke drainage, 

 A. koronaeus, C. branchiophila, and C. philadelphica were found at 

 stations 88-93, 112; Xd. formosus at 88-92, 112; and C. fallax at 88, 

 89, 91, and 92. 



Figure 4. — Dorsal view of carapace and chelipeds: Cambarus I. longulus. 



