KM ONYCHOMYS. 



ii. igoi. p. 122. Zool. Ser. / /. Mamin. Middle Ann -r. \ \V. 

 Indies. I : . C. M. Pub., iv, Pt. i, 1904. p. 168. Zool. SIT. 

 I >K.\n-r, KAY Mou; Morsi 



Type /('((////r. Colorado River at Monument X<>. ^04, Mexican 

 boundary line, Vunia Countv. Arizona. 



Geogr. Distr. Ciila City, across Yuma and Colorado Deserts to 

 the Coast Range. 



261. Onychomys fuliginosus Merriam. 



Onyckomys fitli^in^sns Merr., X. Am. Faun.. .\o. 3, 1890, p. 60. 

 Elliot, Syn. X. Am. Mamm.. F. C. M. Pub., n, 1901, p. i. 

 Zoo). Ser. 

 DUSKY MOI.H MOUSE. 



Type locality. I^lack Tank lava beds, northeast of San Francisco 

 Mountain, Coconino Count}-, Arizona. 



Geogr. Distr. Arizona. Range unknown. 



262. Onychomys macrotis Elliot. 



. Oii\rlh>inys tiuh-mtis Elliot, Pub. Field Columb. Mus., in. 1903, 

 p. 155. Zool. Ser. Id. Mamm. Middle Amer. & W. Indies, F. 

 C. M. Pub., iv, Pt. i, 1904, p. 169. Zool. Ser. 

 LARC,H-EARED MOLE MOUSE. 



Type /<>;///v. Head of San Antonio River, Lower California, 

 Mexico. 



tt'e<>gr. Distr. San Ouentin to San Antonio River, Trinidad Valley 

 and plain of El Alamo to about 5,000 feet elevation in the San Pedro 

 Martir Mountains, Lower California, Mexico. 



263. Onychomys pulcher Elliot. 



< >ny<lii)iys pnhhcr Elliot, Pub. Field Columb. Mus.. in, KJO,;, p. 



243. Zool. Ser. 

 Hi-;.' ; MOI.K MOUSE. 



Type locality. Morongo Pass, San Px-rnardino Mountains. River- 

 side Count y, Calitornia. 



ii'enl. ('Ihir. Si/.e medium ; color pale. 



lt>r. L'pjier parts buff inrlining to jiinkisli, darker on rump. 

 where the tint becomes almost a salnV >n bulT ; nose, sides of I'ai-e. lips, 

 entire under parts, legs and feet pure white; tail above soiled white; 

 sides and under parts white ; ears whitish at base, probably tlesli color 

 in life, apical half brownish black. A tuft of whitish hairs covers the 

 base of the ear. Orbital ring black. 



M'-.r-nrenit'iils. Total length, 150; tail vertebra', 55; hind foot, 



Skull: total length. 25.5; Ileiisel. ;>o; zygomatic width, 

 13.5; intemrbital constriction, 5; length .it nasals, 9; ]>alatal li-ngth. 



