PERODIPUS. 2S» 



thigh stripe. Dorsal and ventral tail stripes plumbeous black to tip; 

 lateral white stripes extending bej'ond the vertebrae. Inside of ear 

 ochraceous, mi.xed with black; outside whitish. 



Mi-asuremeitts. Total length, 289; tail vertebra', 144.8; hind foot, 

 40.6; ear from crown, 10.7. Skull: total length, 40.6; basal length, 

 28.2; mastoid breadth, 25.9; intcrmastoid area length, 5.1: anterior 

 border, 3.6; posterior, 3; nasals, 14.7. 



362. sennetti. {Dipodops), Allen, Bull. Amer. Mus. Nat. Hist., 1891, 



p. 226. 



Type locality. Brownsville, Cameron County, Texas. 



Geogr. Distr. Southeastern Texas. 



Genl. Char. Similar to P. ordi, but darker. Skull: rostrum 

 broad, elongated; mastoid separated by rather broad interparietal, 

 quadrate in shape and with lateral margins inclining inwards; anterior 

 and posterior width about equal. Orbital bridge of maxillary broad. 



Color. Above yellowish ochraceous buff, mixed with black, 

 darkest on dorsal region; sides lighter; flanks huffy yellow; beneath 

 white. Upper tail stripe dusky brown, lower paler, both reaching 

 end of tail; lateral white stripes continued beyond end of vertebrs. 



Measurements. Total length, 210; tail vertebrae, no; hind foot, 

 35; ear, 9. 



363. panamintinus. {Dipodops), Merr., Proc. Biol. Soc. Wash., 



iSy4. ].. 114. 



lype locality. Panamint Mountains, California. 



Geogr. Distr. Panamint Range, eastern California. 



Genl. Char. Largest of genus. 



Color. Above buffy clay, tinged with ochraceous: thigh patches 

 like back; inside of legs dusky; beneath white; dark stripes on tail 

 light dusky; lateral white stripes meeting on distal third; ear pos- 

 teriorly whitish. 



Measurements. Total length, 301; tail vertebrn\ 183; hind foot, 

 44; ear from base, 15. 



364. longipes. {Dipodops), Merr., N. Am. Faun., No. 3, i8go, p. 72. 

 Type locality. Echo Cliffs, Painted Desert, Arizona. 



Geogr. Distr. Utah, Wyoming, Nebraska, New Mexico, and 

 Arizona. 



Genl. Char. Similar to P. ordi, hind feet longer, tail longer, 

 color pale. Skull: zygomatic breadth of the maxillary rounded be- 

 low; parietals without a long, slender postero-lateral process. 



Color. Above ochraceous buff finely lined with black; eye and 

 ear spot white; beneath pure white. Tail, upper and under stripes 

 grayish dusky; the latter narrow, both continuing to the end of pen- 



