32 University of California Publications in Zoology [Vol. 12 



Still higher and to the southeast is the region designated as Fuller's 

 Mill in true Transition country. A well-marked valley, Strawberry 

 Valley, of low Transition character, is south of Fuller's Mill and 

 southeast of and heading up towards San Jacinto Peak. Tahquitz 

 Valley, high up in the Transition zone, is directly south of the Peak. 

 Southeast of the Peak is Round Valley, which marked the upper limit 

 of observed reptiles. Kenworthy and Hemet Lake are near the head 

 of the south fork of the San Jacinto River, south of the San Jacinto 

 Peak and northwest of the Santa Rosa region. They are Upper 

 Sonoran with occasional Transition "islands." West of them is 

 Thomas Mountain. Eastward and on the desert side of the range 

 are Pinon Flat and Asbestos Spring in Upper Sonoran. A little far- 

 ther east is the extreme limit of the San Jacinto mountains, where 

 Dos Palmos Spring, with Carrizo Creek flowing from it to the desert, 

 and the neighboring parallel canon. Deep Canon, show the Lower Son- 

 oran and desert aspects. From the ridge between Kenworthy and Dos 

 Palmos heads Palm Canon, leading almost directly north and emptying 

 out upon the desert around the corner from Whitewater. It is Lower 

 Sonoran. South of Pinon Flat are the localities higher in the Santa 

 Rosa region, namely, Garnet Queen Mine, Santa Rosa Mountain and 

 Toro Peak. The two latter are in high Transition. On the western 

 side from Hemet Lake the San Jacinto River road leads to Vallevista, 

 an "island" of Lower Sonoran. In 1912 the road from the town of 

 San Jacinto to Beaumont, east of Banning, was covered also. After 

 encircling the base of the hills for a few miles the road leads through 

 Lamb Canon, passing from the hills covered with dead grass into 

 thick chaparral at the head of the caiion (2500 feet). 



The reptilian population of the San Jacinto area varies in abund- 

 ance of species and individuals according to locality. The number of 

 specimens recorded cannot indicate exactly the relative abundance 

 because of the inequalities of collecting, both in time and weather 

 conditions. Yet a general impression of population results which prob- 

 ably approximates the correct relative abundance. 



Material collected in 1908, or in 1912 by Mr. Bridwell, is quoted 

 under Museum of Vertebrate Zoology numbers; that collected in 1912 

 by myself is indicated by numbers bearing an asterisk. 



To Professor Charles A. Kofoid, under whose direction the work 

 has been done, and to Mr. Joseph Grinnell of the Museum of Verte- 

 brate Zoology, the writer desires to express her indebtedness for their 

 most valuable suggestions and criticism. 



