MAMMALS OF UTAH 87 



LONG-FOOTED KANGAROO RAT: 

 MOKI KANGAROO RAT 



PERODIPUS LONGIPES (Merriam) 



Dipodops longipes Merriam, N. A. P. No. 3, 1890, p. 72. 

 Perodipus longipes Elliot, Sys. N. Am. Mamm. F. C. M. Pub.. 

 II, 1901, p. 239. Zool. Ser. 



Description — Color : Above, uniform ochraceous buff, 

 finely lined with black-tipped hairs, the latter being most 

 noticeable on the rump; a large, pure white spot over each 

 eye and another behind each ear, cheeks between whiskers 

 and ears, mostly white, slightly mixed with ochraceous. 

 Under parts pure white to base of hairs, including fore legs 

 and feet, band across thighs and hind feet (except soles, 

 which are dusky). Upper tail stripe dusky, continuous to 

 end of tail, but paler on the crested penicillate portion, where 

 it involves the terminal half of each hair only; under tail 

 stripe very narrow posteriorly and indistinctly continuous 

 with the dark tip of the pencil ; lateral white stripes broad 

 and distinct from basal white ring to white basal portion of 

 pencil. (Merriam.) 



Distribution — ^Utah, Wyoming, Nebraska, New Mexico 

 and Arizona. 



Habits — The Moki kangaroo rat is a creature of the 

 sandy desert areas of the southwest and is normally re- 

 stricted to the lowest and warmest parts of the upper So- 

 noran zone. (Gary.) 



Subfamily HETEROMYINAE 



YAVAPAI POCKET MOUSE 



PEROGNATHUS FLAVUS BIMACULATUS (Merriam) 



Perognathus bimaculatus Merriam, N. A. P. No. 1, 12, 1889; 

 Allen, Bull. Am. Mus. Nat. Hist. N. Y. VII, 216, 1895. 



Perognathus apache Allen, ibid. V, 71, 1893 (part). 



Description — Color: As in flavus, but with a greater 

 abundance of black-tipped hairs on dorsum; under parts 

 white with occasional traces of buff; lateral line quite dis- 

 tinct; ears clear buff outside, blackish inside. 



Distribution — Southeastern Utah and central and 

 northeastern Arizona. The Utah specimens have come from 

 Noland's ranch on the San Juan River. 



