ORYZOMYS. 245 



232. crinitus (Oryzomys) , Merr., Proc. Wash. Acad. Nat. Scien., in, 



1901, p. 281. 

 LONG-HAIRED RICE RAT. 



Type locality. Tlalpam, Federal District, Mexico. 



Genl. Char. Large; hind feet long; ears short. Skull resembling 

 that of O. c. aztccus Merr. 



Color. Above buffy fulvous, darkest on rump, and lined with 

 black; chin, throat, and forelegs whitish; rest of under parts buffy; 

 tail dusky above, yellowish below. 



Measurements. Total length, 307 ; tail vertebra?, 161 ; hind foot, 37. 



a. aztecus (Oryzomys}, Merr., Proc. Wash. Acad. Scien., in, 1901, 



p. 282. 

 AZTEC RICE RAT. 



Type locality. Yautepec, State of Morelos, Mexico. 



Geogr. Distr. Southeastern Mexico, from States of Morelos and 

 Puebla to Isthmus of Tehuantepec. 



Genl. Char. Skull : nasals and zygomata slender, the latter bowed 

 downward; palatal slits broadly open posteriorly. Under parts white. 



Color. Above ochraceous, sparsely lined with black; under parts 

 white; tail brownish above, paler beneath. 



Measurements. Total length, 290; tail vertebrae, 154; hind foot, 35. 



233. tectus (Oryzomys'), Thomas, Ann. Mag. Nat. Hist., vin, 1901, 



p. 251. 

 BOGAVA RICE RAT. 



Type locality. Bogava, Chiriqui, Panama. Altitude, 800 feet. 



Genl. Char. Size large; tail longer than head and body. Skull 

 has the supraorbital ridges overhanging and expanded ; frontal region 

 concave ; muzzle heavy ; palatal foramina not reaching level of molars. 



Color. Above tawny rufous, slightly lined with black; sides 

 inclining to ochraceous; upper lip fulvous; chin white; under parts 

 buffy; hands and feet pale buff; tail brown above, white below; ears 

 with ochraceous tuft at base. 



Measurements. Total length, 282; tail, 142; hind foot, 29.5; ear, 

 1 8. Skull : tip of nasals to back of interparietal, 33 ; greatest breadth, 

 17; interorbital constriction, 6.5; length of nasals, n.6; palatal length, 

 13.8 ; length of upper molar series, 4.9. 



234. angusticeps (Oryzomys} , Merr., Proc. Wash. Acad. Scien., in, 



1901, p. 292. 

 SANTA MARIA VOLCANO RICE RAT. 



Type locality. Volcan Santa Maria, Guatemala. Altitude, 9,000 feet. 

 Geogr. Distr. Guatemala, Central America. 



