MICRODIPODOPS. PEROGNATHUS. 



PALLID KANGAROO RAT. 



Type locality. Ten miles east of Stillwater, near sink of the Hum- 

 boldt and Carson, Churchill County, Nevada. 



Geogr. Distr. Known only from the type locality. 



Genl. Char. Tail long and without dark tip. 



Color. Above pale buffy fulvous, lined with black; beneath white; 

 side of nose, face and legs white; tail above buffy, beneath white. 



Measurements. Total length, 171; tail vertebrae, 102; hind foot, 



25-5- 



744. Microdipodops californicus Merriam. 



Microdipodops californicus Merr., Proc. Biol. Soc. Wash., xiv, 



1901, p. 128. 

 CALIFORNIA KANGAROO RAT. 



Type locality. Sierra Valley nearVinton, Plumas County, California. 



Geogr. Distr. Known only from the type locality. 



Genl. Char. Size of M. megacephalns; tail and hind foot longer. 



Color. Above olivaceous, lined with black; beneath white; sides 

 of nose, spot over the eye, behind and on the fold of the ear and 

 feet white; tail above pale fulvous, blackish at tip, beneath white; 

 sides of face and inner side of fore leg washed with pale buffy fulvous. 



Measurements. Total length, 158; tail vertebrae, 91 ; hind foot, 25. 



Subfamily II. Heteromyinse. 

 Genus 98. IVrogiint 1ms. INx-kcl Mi<-'. 



Perognathus Max., Reise Innere N. Amer., i, 1839, pp. 449-450; Id. 

 Nov. Act. Phys. Med. Acad. Caes. Leop.-Carol., xix, Pt. i, 

 1839, pp.*368-373, pi. xxxiv. Type Perognathus fasciatus Max- 

 imilian. 



Cricetodipus Peale, Rep."'Mamm. and Ornith. U. S. Expl. Exped., 

 1848, p. 53, pi. 13, fig. 2. 



Abromys (sic) Gray, Proc. Zool.fSoc., 1868, p. 202. 



t Uni'twsis Coues, Proc. Acad. Nat. Scien. Phil., 1875, p. 305. 



Clicetodipus'Mcrr., N. Am. Faun., No. i, 1889, p. 5, pi. in, fig. 15. 



Subgenus A. Perognathus. 



745. Perognathus fasciatus Maximilian. 



Perognathus jiisci<itns Max.. \nv. Ad. Arad. Caes. Leop.-Carol., 

 xix, Pt. i, 1839, p. 369, pi. xxxiv. Elliot. Syn. N. Am. Mamm., 

 F. C. M. Pub., n. 1901. p. 242. Zool. Ser. 



