366 University of California Publications in Zoology [Vol. 10 



extended to include the San Jacinto and San Bernardino moun- 

 tain regions. It is only fair to state that Stephens (1906, p. 

 173) argued a similar disposition of the case. 



Perognathus spinatus spinatus C. II. Merriam 



Spiny Pocket Mouse 



But a single example of this species resulted from our col- 

 lecting' in the San Jacinto region: an adult male, no. 2006, 

 trapped August I'M at 3000 feet altitude near Dos Palmos Spring 

 on the desert slope of the Santa Rosa .Mountains. The locality 

 of capture was in high Lower Sonoran close to a rocky escarp- 

 ment — just such a locality as is inhabited by this pocket mouse 

 elsewhere. Our present record affords an extreme southwestern 

 station for the species. 



Lepus californicus deserticola Mearns 

 Colorado Desert Jack Rabbit 



Jack rabbits were preserved from the following localities in 

 the San Jacinto region: Kenworthy, 4500 feet, four (nos. 1899, 

 1900, 2312. 2313); Cabezon, 1700 feet, one (no. 2311); White- 

 water. 1130 feet, one (no. 1568) ; and Palm Springs, 450 feet, one 

 (no. 704(i : seven in all. They are all typical examples of 

 deserticola, except that the Kenworthy specimens in their slightly 

 darker coloration, tend to approach the coasl form bennetti (see 

 Nelson, L909, p. 136). 



The species was observed, sometimes in fair abundance, at 

 many points where specimens were not preserved. At Ken- 

 worthy, in May and June, and near lionet Lake in August, one or 

 two were seen almost daily in the sagebrush of the valley. At 

 Dos Palmos in June and in August, they were scattered in small 

 numbers through the brush, as was also the case in the very 

 similar region throughoul the Lower part of Palm Canon, and 

 on the floor of the desert below. Noted in fair abundance at 

 Cabezon and Whitewater in May. At Vallevista, Augusl 2!) to 

 September 5, jack rabbits were very abundant in the brush of 

 the valley. Nelson ( 1909, p. 140) records the species from Straw- 

 berry Valley, a point where we failed to meet with it, though 

 evidence of the presence of the animal was observed. 



