426 CRAYFISHES. 



Type locality: — Head of Gordon's Valley, Edgewood Park, Allegheny Co., 

 Pa. Types, Carnegie Mus.; parahjpes, M. C. Z., No. 6,953; U. S. N. M., No. 

 30,613. 



71. CaMBARUS DIOGENES. 



Camharus diogenes Girard, Proc. Acad. Nat. Sci. Philad., 1852, 6, p. 88. 



fCambarus nebrascensis Girard, Proc. Acad. Nat. Sci. Philad., 1852, 6, p. 91. 

 Type locality: — Fort Pierre, Nebraska [now in Stanley Co., South Dakota]. 



Camharus obesus Hagen, Mem. M. C. Z., 1870, 2, p. 81. Type locality: — 

 Lawn Ridge, Illinois. Types, M. C. Z., No. 195; paratypes, M. C. Z., No. 165 

 (Belleville, Saint Clair Co., 111.), No. 336 (Evanston, Cook Co., 111.), No. 229 

 (Arkansas), No. 3,363 (Petersburg, Dinwiddle Co., Va.); Mus. Hist. Nat. Paris 

 (Lawn Ridge, 111., Belleville, 111.); St. Petersburg Mus. (Belleville, III). 



Type locality: — Near Washington, D. C. Paratype (?), Acad. Nat. Sci. 

 Philad. 



71a. Cambarus diogenes ludovicianus. 



Camharus diogenes, var. ludoviciana Faxon, Proc. Amer. Acad., 1884, 20, 

 p. 144. 



Type locality: — New Orleans, La. Cotypes, U. S. N. M., No. 5,625; 

 M. C. Z., No. 3,617. 



72. Cambarus argillicola. 



Cambarus argillicola Faxon, Proc. Amer. Acad., 1884, 20, p. 115. 



Type locality: — Detroit, Mich. Types, M. C. Z., No. 3,459. 



73. Cambarus uhleri. 



Cambarus uhleri Faxon, Proc. Amer. Acad., 1884, 20, p. 116. 



Type locality: — Swamp on Eastern Road near Felsburg, Somerset Co., 

 Maryland. Type M. C. Z., No. 3,634 (l d' f. I.) ; paratypes, M. C. Z., No. 3,633, 

 3,635, 3,636 (Dorchester, Somerset, and Worcester Cos., Md.). 



74. Cambarus clypeatus.^ 



Cambarus clypeatus Hay, Proc. U. S. Nat. Mus., Oct. 11, 1899, 22, p. 122. 



Type locality: — Bay Saint Louis, Hancock Co., Miss, (found in a skiff). 

 Type, U. S. N. M., No. 22,778 ( 9 ). 



' The position of this species is doubtful, as only the female is known. 



