294 Field Columbian Museum — Zoology, Vol. HI. 



6 Examples from Lone Pine. 



"At the base of the Sierras, near Lone Pine, this form was 

 secured about brushy areas bordering streams, and usually 

 occupying deserted nests of Ncotoma fuscipes dispar." 



Peromyscus eremicus. 



Peromyscus eremicus Baird, N. Am. Mamm., 1857, p. 479. 

 Elliot, Syn. N. Am. Mamm., 1901, p. 136. 



72 Specimens: 16 Palm Springs, 8 Whitewater, it Morongo 

 Pass, 2 Warren's Well, 2 Burns Canon, 2 Oro Grande, 1 Daggett, 



5 Furnace Creek, Death Valley, 4 Fort Tejon, 4 Bailey's Ranch, 

 9 Canada de las Uvas, 4 Neenach, 4 Mt. Pinos. 



In the low, sandy parts of the desert this mouse occurs abun- 

 dantly, ranging to an altitude of 5,000 feet, or slightly higher 

 in suitable localities. The distribution of the creosote bush 

 coincides fairly well with the distribution of this mouse." The 

 five Death Valley examples are included with the others of this 

 species with some hesitation, as their tails are much shorter, 

 99- 103. 



Peromyscus petraeus. 



Peromyscus petraeus (misprinted petraius.) Elliot, Pub. Field 

 Columb. Mus., in, 1903, p. 244. Zoology. 



68 Examples: 7 Palm Springs, 2 Morongo Pass, 4 Victor, 

 11 Oro Grande, 1 Daggett, 5 Copper City, 7 Lone Willow Spring, 



6 Wild Rose Spring, 5 Hannopee Canon, 1 Emigrant Spring, 

 1 Coal Kilns, 2 Coso Mountains, 9 Inyo Mountains, 7 Lone Pine. 



"An abundant animal on the higher parts of the desert and 

 on the flanks of the mountains in the same region. The species 

 usually occurs on rocky mesas and hillsides, or in boulder-strewn 

 creek beds, seldom on open, sandy flats. On the Panamint 

 Mountains they were found from 5,000 to 9,000 feet, usually in 

 areas covered by sage-brush, Artcmcsia tridentata. In the Inyo 

 Range they were not found above 6,000 feet. On the east 

 slope of the Sierras in Owens Valley and on the Coso Mountains 

 they were common in sage-brush thickets." 



Peromyscus montipinoris. 



Peromyscus montipinoris Elliot, Pub. Field Columb. Mus., in, 

 1904, p. 264. 



3 Specimens: 1 Lockwood Valley, Mt. Pinos, 2 Fort Tejon. 

 "A rather rare species in the mountains." 



