LIOMYS. 101 



of auditory meatus, 14.6; length of upper molar series, 5.3; length of 

 mandible, 15.2; length of lower molar series, 5.2. Ex type in United. 

 States National Museum. 



1 Genus Liornys. 



Liomys pictus escuinapae (Allen). 



Heteromys pictus escuinapcz Allen, Bull. Am. Mus. Nat. Hist., 

 XXII, 1906, p. 211. 



Type locality. Escuinapa, Sinaloa, Mexico. 



Geogr. Distr. Coastal Plains and Pacific slope of Sierra Madre 

 from southern part of the state of Sinaloa, southward into typical 

 L. pictus in southern portion of the Province of Tepic and northwest- 

 ern part of the State of Jalisco, arid tropical and lower Sonoran Zone. 



Genl. Char. Similar to L. pictus but paler; posterior border of 

 nasals emarginate. 



Color. Top of head buff and black, the latter being the tips of the 

 hairs; upperparts from head to rump orange-buff and black, grading 

 into brownish gray on rump and outer side of limbs; flanks orange- 

 buff tempered by the gray bases of the hairs showing; orange-buff 

 lateral line, lips, inner side of limbs white; hands and feet pale brown; 

 tail blackish above, brownish beneath. Ex type in American Museum 

 of Natural History. 



Measurements. Total length, 216; tail, 108, hind foot, 24. Skull: 

 Total length, 30; Hensel, 21; zygomatic width, 14.1; intertemporal 

 width, 7.2; length of nasals, 10.9; length of upper molar series, 5; 

 length of mandible, 12.5; length of lower molar series, 4.5. Ex type 

 in American Museum of Natural History. 



Liomys vulcani (Allen). 



Heteromys vulcani Allen, Bull. Am. Mus. Nat. Hist., XXIV, 1908, 

 p. 652. 



Type locality. Volcan de Chinandega, Nicaragua. Altitude 

 about 4000 feet. 



Geogr. Distr. Vicinity of the Volcan de Chinandega in the moun- 

 tains of extreme western Nicaragua. 



Color. The hairs on top of head and back are gray at base with black 

 tips ; flanks grayish brown, as is also the outer side of limbs ; lips, throat, 

 inner side of limbs, hands and feet pure white; tail above blackish, 

 beneath white. Ex type in American Museum of Natural History. 



1 Employed as a subgenus in the Check-List. 



