198 PEROMYSCUS. 



Geogr, Distr. Tres Marias Islands, State of Jalisco, Mexico. 



Genl. Char. Size large, tail long; similar to P. spicilegus, but 

 larger. No superciliary ridges on skull. 



Color. Above and on sides pale ochraceous buff, dorsal region 

 darkest; under parts white with salmon spot on breast; tail above 

 and tip dark, beneath whitish. 



Measurements. Total length, 222; tail vertebrae, 119; hind foot ,26. 



164. eva (Peromyscus*) , Thomas, Ann. Mag. Nat. Hist., ;th Ser., 



i, 1898, p. 44. 

 EVE'S MOUSE. 



Type locality. San Jose del Cabo, Lower California, Mexico. 



Geogr. Distr. Cape region of Lower California, Mexico. 



Genl. Char. Size large; tail long. 



Color. Above sandy rufous, lined with black on dorsal region; 

 sides rufous; under parts white, base of hairs slate; hands and 

 feet silvery white; ankles dusky; tail above brown, paler beneath; 

 ear pale brown. 



Measurements. Total length, 196-216; tail vertebrae, 108-128; 

 hind foot, 21; ear, 17. Skull: "basal length, 20.3; basilar length, 

 18.8; greatest breadth, 12.8; length of nasals, 9.6; interorbital con- 

 striction, 4; interparietal, 3.7 x 9; width of braincase at squamosals, 

 11.7; palate, length from henselion, 10; diastema, 6.6; palatal foram- 

 ina, 4.8X 2.1 ; upper molar series, 3.6. " 



165. nudipes (Hesperomys), Allen, Bull. Amer. Mus. Nat. Hist., 



1891, p. 213. 

 LA CARPINTERA FIELD MOUSE. 



Type locality. La Carpintera, Costa Rica. 



Genl. Char. Ears, tail, and feet naked, the first very large. Skull 

 has rostrum very narrow, lengthened. 



Color. Above dark brown, hairs tipped with rufous; sides deeper 

 rufous; nose grayish; dusky spot at base of whiskers, and another in 

 front of eye; under parts grayish white, breast crossed by a band of 

 pale chestnut; hands and feet naked, flesh color; tail naked, grayish 

 brown, paler at tip. 



Measurements. Total length, 230.9; tail, 139.7; hind foot, 28.5; 

 ear from crown, 20.3. Skull: total length, 36.9; basal length, 31.2; 

 greatest breadth, 16.5; length of nasals, 14.5; length of mandible, 

 22.4; height at condyle, 7.9; length of upper molar series, 5.1. 



166. merriami (Pcromyscus) , Mearns, Proc. U. S. Nat. Mus., 1896, 



P- 138. 

 SONOYTA DESERT MOUSE. 



Type locality. Sonoyta, on Sonoyta River, State of Sonora, Mexico. 



