368 University of California Publications in Zoology [Vol. 10 



referable to this coast form. Neither in coloration, proportions, 

 nor characters of cranium can they be distinguished from speci- 

 mens of 8. a. sanctidiegi from western San Diego County. 



Vallevista was the only point where this subspecies was with 

 certainty recognized. Here the rabbits were exceedingly abund- 

 ant, in the brush-covered washes and on the mesas at the base 

 of the hills. 



In the San Jacinto region the rabbits of the Sylvilagus 

 auduboni group, represented by the subspecies sanctidiegi and 

 arizonae, on the coast and desert sides, respectively, appear to 

 be restricted to the Lower Sonoran zone at the base of the 

 mountains, and probably occur nearly continuously around the 

 range, though uo1 uniformly abundant ;il all apparently suitable 

 spots. Higher up, in the Upper Sonoran zone, the cottontail 

 seems to be entirely replaced by the brush rabbit. »s'. bachmani 

 cinerasct us. 



Sylvilagus bachmani cinerascens (Allen) 

 Ashy Brush Rabbit 



Eight specimens collected, as follows: Kenworthy, 4500 feet, 

 three (nos. 1901-1903); Dos Palmos Spring, 3500 feet, four 

 (nos. 1904-1906. 2308); Thomas Mountain, 6800 feet, one (no. 

 2229). Indications of the presence of the species were observed 

 in the vicinity of the Garnet Queen Mine, on Santa Rosa Moun- 

 tain, 6000 feet, where plentiful sign was noted in the greasewood 

 along the road, at the extreme upper edge of the chaparral belt. 



It seems probable that notebook records of "cottontails" seen 

 at Schain's Ranch, 4900 feet, and Poppet Flat, 4000 feet, really 

 pertain to this species. Several were seen at these points June 

 l!7 ;iikI Julj 1">, but none taken, and as specimens of S. a. sancti- 

 diegi were not secured elsewhere in the mountains at this alti- 

 tude, there is little doubt but that 8. b. cinerascens was the 

 species observed. 



At no point were many brush rabbits seen, a fact possibly 

 due more to the timid and retiring disposition of the animal, 

 and to the nature of its habitat, than to its actual scarcity. At 

 Kenworthy during May and June they were seen from time to 

 time, usually in the early morning or late afternoon, and invari- 



