DIPODOMYS. 345 



352. deserti (Dipodomys) , Steph., Am. Nat., xxi, 1887, p. 42, pi. v. 



Elliot, Syn. N. Am. Mamm., 1901, p. 235. 

 DESERT KANGAROO RAT. 



Type locality. Mojave River, near San Bernardino County, 

 California. 



Geogr. Distr. State of Sonora and Lower California, Mexico, 

 north to Mojave and Colorado deserts, southeastern California. 



Genl. Char. Large; colors pale; tail longer than head and body; 

 mastoids greatly developed. 



Color. Above pale yellowish brown, hairs plumbeous at base; 

 legs, feet, and under parts white; tail white, with a pale brown dorsal 

 stripe, growing darker towards end, and extending from near base 

 to white tip; white spot over eye and behind ear; white thigh stripe. 



Measurements. Total length, 133; tail vertebrae, 204; hind foot, 

 52. Skull: total length, 42; Hensel, 36; zygomatic width, 21; inter- 

 orbital constriction, 13; mastoid width, 28.5; length of nasals, 15; 

 width of parietal anteriorly, 17.5; palatal length to incisive foramina, 

 7; length of upper molar series, 5; length of mandible, 18. 



353. spectabilis (Dipodomys), Merr., N. Am. Faun., No. 4, 1890, 



p. 46. Elliot, Syn. N. Am. Mamm., 1901, p. 235. 

 HANDSOME KANGAROO RAT. 



Type locality. Dos Cabezos, Cochise County, Arizona. 



Geogr. Distr. States of Sonora and Chihuahua, Mexico, and 

 portions of Texas and Arizona, eastward to Sierra Blanca, Texas. 



Genl. Char. Size large; tail nearly twice the length of head and 

 body; mastoids not meeting behind parietals; maxillary bridge of 

 orbit broad. 



Color. Above ochraceous buff, lined with black, sides paler; top 

 of head and back darkest; facial crescent crossing nose black; hip 

 patch ochraceous; hind leg white above, dusky below; dorsal stripe 

 of tail dusky for basal half, followed by a broad black band, termi- 

 nating in a long white brush; ventral stripe dusky, the two meeting 

 about two-thirds the length of tail from base, the lateral white stripes 

 disappearing. 



Measurements. Total length, 355; tail vertebras, 211; pencil, 30; 

 hind foot, 56; ear, 17.5. Skull: total length, 46; Hensel, 31; zygo- 

 matic width, 25; interorbital constriction, 15; mastoid breadth, 28; 

 length of upper molar series, 5.5; length of nasals, 10; length of 

 mandible, 21. 



354. merriami (Dipodomys), Mearns, Bull. Amer. Mus. Nat. Hist., 



1890, p. 290. Elliot, Syn. N. Am. Mamm., 1901, p. 232. 



