200 University of California Publications in Zoology [Vol. 10 



George Ferguson, of Colton. and Harry G. Rising of Los 

 Ang«;Ies. Although in the mountains merely for pleasure, they 

 rendered valuable assistance. During June the writers were 

 accompanied by L. Hollister Jones, as assistant, and during June 

 and July by Fordyce Grinnell, Jr. 



Walter P. Taylor and Charles H. Richardson, Jr., with 

 Charles L. Camp as assistant during a portion of the season, 

 penetrated the region from the north. Their collecting stations, 

 with the time spent at each, are as follows : 



Cabezon, May 1 to May 25 Schain 's Ranch, June 16 to June 30 



Snow Creek. May 25 to June 3 Fuller's Mill, June 30 to July 5 



Whitewater, June 3 to June 6 Round Valley. July 6 to July 12 

 Banning, June 6 to June 16 



The party entering upon the mountains from the west trav- 

 eled to Kenworthy by wagon. From this point as a base, pack 

 animals were used to reach the stations in Palm Canon and the 

 Santa Rosa Mountains. Strawberry Valley, reached by wagon, 

 served as a starting point for pack trips to Tahquitz Valley, 

 Round Valley, and the summit of San Jacinto Peak. In San 

 Gorgonio Pass the Southern Pacific railroad was used to reach 

 the series of collecting stations nearby. From Banning. Schain 's 

 Ranch and Fuller's Mill were reached by wagon. The latter 

 point was used as a base from which pack trips were made to 

 higher parts of the mountains. 



The objects of all this field work were to gather collections 

 of mammals, birds and reptiles, and to record all information 

 practicable to obtain in regard to them, especially that in line 

 with problems in distribution. The specimens obtained by the 

 .Museum parties number: mammals. 1099; birds, 1533; sets of 

 birds' eggs with nests, 15; reptiles, 437. 



Information based upon mammals obtained by the senior 

 author at Palni Springs in December and January, 1903 and 

 1904, and February 9 to 13, 1912, is also included in the present 

 report; but inasmuch as the birds observed at these times have 

 already been published upon elsewhere (Grinnell, 1904 a, pp. 40- 

 45 ; 1912 b, p. 154) they are omitted from this account. They 

 are, however, taken into consideration in the discussion of the 



