PERODIPUS. 205 



a. Peroclipus streatori simulans Merriam. 



Perodipus streatori simulans Merr., Proc. Biol. Soc. Wash., xvii, 

 1904, p. 144. 

 Counterfeit Kangaroo Rat. 



Type locality. Dulzura, San Diego County, California. 



Geogr. Distr. San Diego County to Morro in San Luis Obispo 

 County, California. 



Genl. Char. End of tail not white; maxillaries separated. 



Color. Like P. streatori. 



Measurements. Total length, 280 ; tail vertebrae, 165 ; hind foot, 40. 



730. Perodipus panamintinus Merriam. 



Perodipus panamintinus Merr., Proc. Biol. Soc. Wash., ix, 1894, 

 p. 114. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 239. Zool. Ser. 

 Panamint Kangaroo Rat. 



Type locality. Head of Willow Creek, Panamint Mountains, Inyo 

 County, California. 



Geogr. Distr. Panamint Mountains, eastern California. 



731. Perodipus cabezonae Merriam. 



Perodipus cabezonae Merr., Proc. Biol. Soc. Wash., xvii, 1904, 

 p. 144. 

 Cabezon Kangaroo Rat. 



Type locality. Cabezon, Colorado Desert, California. 



Geogr. Distr. Known only from the type locality. 



Genl. Char. Size small; ears large. Skull rather long and narrow ; 

 sides of fronto-parietal shield approximating anteriorly; maxillary 

 .arches compressed. 



Color. "BufTy ochraceous. Externally most like P. panamin- 

 tinus." , 



Measurements. Type. Total length, 275; tail vertebrae, 162 ; hind 

 foot, 42.3. 



732. Perodipus montanus (Baird). 



Dipodomys montanus Baird, Proc. Acad. Nat. Scien. Phil., 1855, 

 p. 334. Mearns, Proc. Biol. Soc. Wash., xvii, 1904, p. 140. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, Appendix, 

 p. 431. Zool. Ser. 

 Perodipus montanus Merr., Proc. Biol. Soc. Wash., xvii, 1904, 

 p. 140. 

 Baird's Kangaroo Rat. 



Type locality. Near Fort Garland (Old Fort Massachusetts), San 

 Luis Valley, south central Colorado. 



