]^58 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



In Round Valley, September 13, 14 and 15, gophers were 

 found to be working actively, though in a rather limited area. 

 The meadow here is about two hundred yards across, and 

 about a quarter of a mile in length, and the gophers occupied 

 a narrow belt surrounding this area. They worked down to- 

 ward the center as far as the water permitted, but not far into 

 the dry woods of the higher surrounding ridges. Fresh 

 mounds were also noted along the margins of the stream flow- 

 ing out of the valley, at various points along this and other 

 small streams between Round Valley and Hidden Lake, and 

 between Hidden Lake and Tahquitz Valley. These fresh work- 

 ings, however, were always near water, where there was a lit- 

 tle green growth. No gopher sign was noted on the steep 

 slopes between Round Valley and the summit of San Jacinto 

 Peak. Here, as elsewhere, it seemed evident that such 'stony 

 ground is impassable to the animals. 



The burrows in Round Valley were of noticeably small size, 

 a condition possibly produced by the dryness and consequent 

 hardness of the ground. The occupied holes were all in grassy 

 areas, and the green grass seemed to be the principal food plant 

 sought. Cut grass was found in several of the holes. Of the 

 seven animals taken at this point, four were caught in the mid- 

 dle of the day. The other three may also have been captured 

 after daylight, as the traps were not inspected until some time 

 after dawn. Evidently they were working actively during the 

 day. 



