1909.] NATURAL SCIENCES OF PHILADELPHIA. 433 



& 



Length of Length of Length of Length of 

 body. pronotum. tegmen. caudal femur. 



mm, mm. mm. mm. 



Cottonwood, Cal., ... 14.5 3 14.5 8.7 



Kelso, Cal., 13.8 2.9 14.1 8.3 



Kelso, Cal., 15.5 3.2 16 9.1 



Cima, Cal., 13.3 2.9 12.5 7.3 



Cima, Cal., 14 2.9 13.5 8 



Bird Spg. Mts., Cal.-Nev., . 13.3 2.5 12.6 8 



Bird Spg. Mts., Cal.-Nev., . 15.3 3 13.9 8.3 



Las Vegas, Nev., ... 14 2.9 14 8 



9 



Cottonwood, Cal., ... 19 3.5 17.1 9.6 



Kelso, Cal., 21 3.9 18 10.5 



Kelso, Cal., 23.3 3.8 19.2 11.3 



Cima, Cal., 17.7 3.3 15 8.9 



Cima, Cal., 17.5 3.3 16.7 9.1 



North Range, Prov. Mts., Cal., 19.5 3.7 17.8 10 



Bird Spg. Mts., Cal.-Nev., . 19.8 4 16.8 10.2 



Bird Spg. Mts., Cal.-Nev., . 21.2 4.3 20 11 



Las Vegas, Nev., . . . 18.5 3.8 18.5 9.9 



The large Kelso and Bird Spring Mountains females are very similar 

 in size to individuals of the Arizonan kunzei, as will be seen by com- 

 paring the measurements given above with those of kunzei recently 

 published by the authors, 8 but on comparing the proportions of the 

 caudal femur the relationship of the larger Californian specimens is 

 seen to be with coquilletti. It appears quite probable that kunzei is 

 merely a geographic race of coquilletti. 



The color form with blackish brown on the prozona of the lateral 

 lobes of the pronotum, gena j and pleura already described by the 

 authors from Yuma material is strongly represented in the California 

 coquilletti, two males and two females from Cima and five males and 

 four females from the Bird Spring Mountains being in this phase. 

 The Las Vegas and Kelso series are uniformly paler and less contrast- 

 ingly colored, the Las Vegas one very much paler and grayer, than 

 the other lots; the Cottonwood individuals are dusty blackish- 

 gray with the ochraceous tones reduced to a minimum. The dorsal 

 femoral bars are quite strongly marked in the individuals with the 

 blackish-brown markings on the pronotum, while the dorsal aspect 

 is also more buffy in these specimens. 



At Cottonwood the species was found common on greasewood 

 (Covillea tridentata) , and plentiful at Kelso and in the Bird Spring 



tProc. Acad. Nat. Sci. Phila., 1908, p. 384. 



