466 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



zygomatic breadth, 13.2 (12.^); interorbital breadth, 4.9 (4.8); 

 breadth of braincase, 11.6 (11.7) ; length of nasals, 9.5 (9.3) ; length of 

 mandible, 13.2 (13.3); maxillary tooth row, 3.7 (3.6). For detailed 

 measurements of specimens, see page 482. 



Type-specimen. — No. ffUr? United States National Museum, 

 Biological Survey collection. Adult male (teeth considerably worn) 

 in full winter pelage. Collected December 30, 1890, by Vernon 

 Bailey. Original mmiber, 2314. 



Remarks. — In the inmiediate vicinity of Owens Lake, the Ony- 

 chomys of the longicaudus type develops its brightest coloration, with 

 the minimum of admixture of any darker streaking from the hair 

 tips. The animals from this region are so decidedly different in color 

 from specimens of typical longicaudus, and occupy such a definite, 

 though limited, range that the form represented requires recognition 

 by name. It resembles pulcher in the purity of the color, but is 

 decidedly richer and brighter colored. The intensity of the coloration 

 in this region parallels that of several other species of rodents. 



Specimens examined. — Total number, 21, from the following locali- 

 ties: 



California: Coso Mountains, 2 (Field Mus.) ; Hot Springs Valley, 

 2; Keeler, 8; Lone Pine, 3; Olancha, Owens Lake, 6. 



ONYCHOMYS TORRIDUS TULARENSIS Merriam. 



1904. Onychomys torridus tularcnsis 'Merriau, Proc. Biol. Soc. Washington, vol. 17, 

 p. 123. June 9. 



1905. Onychomys longicaudus tularensis Elliot, Field Col. Mus., zool. ser., vol. G, 

 p. 132. 



Type-locality. — Bakersfield, Kern County, California. 



Geograpliic distribution. — Upper San Joaquin Valley and neigh- 

 boring footliills and valleys, California. North to Little Panoche 

 Creek, San Benito County; south to Carriso Plain and Bakersfield. 



General characters. — Color of upper parts grayish-drab; very differ- 

 ent from adults of any other form found in the United States, and 

 most resembling 0. t. canus of Mexico. Posterior edge of palate not 

 conspicuously concave, frequently convex, but never with distinct 

 spine. 



Color. — Adult in full winter pelage (151339, Little Panoche Creek, 

 California, December 11): Upperparts light drab, slightly washed 

 with a pinkish cast, and everywhere finely lined with the dark brown 

 of the hair tips; upper face darker, ashy-gray. Between the color 

 of the back and the white of the lower sides Is a narrow, indefinite 

 stripe of light pinldsh-buft", clearest and most sharply marked pos- 

 teriorly. The underfur is of a lighter gray than in the neighboring 

 subspecies ; the lanuginous tufts at ear bases are grayish-white and 

 barelv noticeable; arms, hands, lower sides of legs and of tail, lower 



