426 CRAYFISHES. 
Type locality: — Head of Gordon’s Valley, Edgewood Park, Allegheny Co., 
Pa. Types, Carnegie Mus.; paratypes, M. C. Z., No. 6,953; U.S. N. M., No. 
30,613. 
71. CAMBARUS DIOGENES. 
Cambarus diogenes Girard, Proc. Acad. Nat. Sci. Philad., 1852, 6, p. 88. 
?Cambarus nebrascensis Girard, Proc. Acad. Nat. Sci. Philad., 1852, 6, p. 91. 
Type locality: — Fort Pierre, Nebraska [now in Stanley Co., South Dakota]. 
Cambarus 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., Ill.), No. 336 (Evanston, Cook Co., IIl.), No. 229 
(Arkansas), No. 3,363 (Petersburg, Dinwiddie Co., Va.); Mus. Hist. Nat. Paris 
(Lawn Ridge, IIl., Belleville, Ill.); St. Petersburg Mus. (Belleville, Il.). 
Type locality: — Near Washington, D.C. Paratype (?), Acad. Nat. Sci. 
Philad. 
7la. CAMBARUS DIOGENES LUDOVICIANUS. 
Cambarus diogenes, var. ludoviciana Faxon, Proc. Amer. Acad., 1884, 20, 
p. 144. 
Type locality: — New Orleans, La. Cotypes, UU; Ss aNae Me Not 5625; 
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 (1 & f. 1.); 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. 8. 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 (2). 
1 The position of this species is doubtful, as only the female is known. 
