1912.] NATURAL SCIENCES OF PHILADELPHIA. 231 



correlated with definite regions, as San Jose del Cabo representatives 

 are as small as any seen, while the Los Angeles County, California, 

 specimens are all of very small size. The Lower California indi- 

 viduals vary considerably from the typical New Mexican phase, 

 approaching occidentale in the shape of the head; some specimens 

 having the proportions of the latter as in occidentale, but in such 

 cases the proportion of the pronotum in the male, the rather slenderer 

 caudal femora in both sexes, and the distinctly shorter and more 

 robust ovipositor in the female will serve to associate properly the 

 individuals. The number of spines on the dorsal margins of the 

 caudal metatarsi varies considerably, the external margin having 

 from six to nine and the internal seven to twelve distinctly indicated. 

 The number of these spines is in no way correlated with the locality. 

 The tympanum is clearly indicated on the cephalic face of the caudal 

 tibiae in all the adults examined, although varying considerably in 

 size and exact shape, but it is not present in nymphal specimens. 

 The cerci vary in length in this species much as in Cryptoptilum 

 antiUantm. The subgenital plate in the male is weakly subtruncate 

 in several individuals, but its normal form is similar to that of 

 occidentale. 



Specimens Examined. — 40; 13 males, 23 females and 4 nymphs. 



Dripping Springs, Organ Mts., N. M.; Sept., 1899; (Cockerell); 

 1 — . [U. S. N. M.]: (Cockerell); 1 d\ 1 9. [Scudder Collection.] 



La Cueva, Organ Mts., N. M.; Sept. 4, 5; (C. H. T. Townsend); 

 1 d\ 1 9 . (Types) [Scudder Collection.] 



Alamogordo to Dry Canon, N. M.; July 13, 1907; (R. and H.); 

 1 9 n. [Hebard Collection.] 



Florida Mts., N. M.; (Pilsbrv); 2 9 . [A. N. S. P.] 

 California; 19. [U. S. N. M.] 



Los Angeles County, Cal.; (Coquillett) ; 2 d\ 4 9 . [U. S. N. M.] 

 Los Angeles, Cal.; (Coquillett); 1^,29. [U. S. N. M.]: 1 <? . 

 [Hebard Collection.] 



Claremont, Cal.; (C. F. Baker); 1 d\ [A. N. S. P.] 

 Julian, San Diego Co., Cal.; July; 1 d\ (Type) [Scudder Collec- 

 tion.] 



Lower California; 1 cf , 3 9. [Hebard Collection.] 



Sierra Laguna, L. Cal.; (Eisen); 1 cf, 3 9 . [ibid.] 



La Joya, Sierra Laguna, L. Cal. ; (Eisen); 1 9 n. [ibid.] 



La Cheeparosa, L. Cal.; 1 d", 1 9 n. [ibid.] 



San Lazaro", L. Cal.; Sept., 1894; 1 9. [ibid.] 



Sierra el Toste, L. Cal.; Sept. 23; (Eisen); 1 d\ [ibid.] 



San Jose" del Cabo, L. Cal.; 1 cf , 5 9 , 1 9 n. [ibid.] 



