416 CRAYFISHES. 
Mus. Hist. Nat. Paris (1 @ f. 1,1 @ f. Il., 1 2); paratypes, Carnegie Mus. 
Pittsburgh; M.C.Z., Now6,955)(1 ot. Foot fie 
§ V. Third segment of second and third pairs of legs of male hooked. 
First pair of abdominal appendages of male not truncate, inner and outer parts 
separate and divergent for some distance from the tip; outer branch cleft into 
two slender teeth at the end; inner branch either acute or spatulate at the tip. 
(Subg. CAMBARELLUS of Ortmann.) 
31. CAMBARUS SHUFELDTI. 
Cambarus shufeldtii Faxon, Proc. Amer. Acad., 1884, 20, p. 134. 
Type locality: — Near New Orleans, La. Cotypes, U.S. N. M., No. 4,860; 
M. C. Z., No. 3,684. 
32. CAMBARUS MONTEZUMAE. 
Cambarus montezumae Saussure, Rev. et Mag. Zool., 1857, sér. 2, 9, p. 102. 
Type locality: — Swamps of the Valley of Mexico; specifically, ponds in the 
park of Chapultepec, Mexico. Cotypes, Geneva Mus.; Berlin Mus.; U.S. N. M., 
No. 20,683 (ex Geneva Mus.). 
32a. CAMBARUS MONTEZUMAE DUGESII. 
Cambarus montezumae dugesti Faxon, Proc. U. 8. Nat. Mus., Feb. 17, 1898, 
20, p. 660. 
Type locality: — State of Guanajuato, Mexico. Types, U. 8. N. M., No. 
16,087; paratypes, M. C. Z., No. 4,389. 
32b. CAMBARUS MONTEZUMAB AREOLATUS. 
Cambarus montezumae, var. areolata Faxon, Mem. M. C. Z., 1885, 10, p. 123. 
Type locality: — Near Parras, Cohahuila, Mexico. Type, M. C. Z., No. 
3,650. 
32c. CAMBARUS MONTEZUMAE CHAPALANUS. 
Cambarus chapalanus Faxon, Proc. U. 8. Nat. Mus., Feb. 17, 1898, 20, p. 
661. 
Type locality: — Lake Chapala, State of Jalisco, Mexico. Type, U.S.N.M., 
No. 17,698 (1 &); paratypes, U.S. N. M., No. 16,294 (2 o&); M. C. Z., No.: 
4,777 (1 &). 
32d. CAMBARUS MONTEZUMAE OCCIDENTALIS. 
Cambarus montezumae occidentalis Faxon, Proc. U. 8. N. M., Feb. 17, 1898, 
20, p. 661. 
