CRAYFISHES — HOBBS, HOLT, AND WALTON 



21 



at 3, 5, 24, 49, 54, 57, 63, 66, 71, 87, 89, 91, 92, 95-97; C. holostoma 

 at 7, 10, 19, 21-23, 25, 37; C. ingens at 5, 54, 64, 95, 97; C. philadelphica 

 at 3, 5, 8-10, 12, 14, 16, 17, 19, 21, 22, 24-26, 28, 29, 32, 34-37, 39, 

 44-46, 48, 50-54, 59, 60, 66, 68, 69, 71, 74, 76, 77, 87, 89-94, 98, 107, 

 108, 110, 111, 113, 115, 118, 119-125; P. alcicornus at 3-5, 19, 24, 



Figure 2. — Dorsal view of carapace and chelipeds: Cambarus b. bartonii. 



