HODOMYS. 



KEY TO THE SPECIES. 



A. Above^tawny f errugineous ; tail unicolor H. alleni 



B. Above dull fulvous and black; tail bicolor H. vetulus 



1297 



297 

 297 



FIG. XLIV. HODOMYS ALLENI. ALLEN'S WOOD RAT. 



301. alleni (Neotoma), Merr., Proc. Biol. Soc. Wash., vii, 1892, 



p. 168. 

 ALLEN'S WOOD RAT. 



Type locality. Manzanillo, State of Colima, Mexico. 



Geogr. Distr. State of Colima, Mexico. 



Genl. Char. Size large; tail shorter than head and body, annu- 

 lations visible ; molar series large ; first and second upper molars with 

 a lateral triangle on each side; last lower molar S-shaped, and with a 

 reentrant angle on outer side. 



Color. Above tawny ferrugineous ; sides of face mouse or bluish 

 gray; under parts white, basal portion of hairs plumbeous; tail 

 blackish, unicolor; hands and feet whitish. 



Measurements. Total length, 472; tail vertebrae, 225; hind foot, 

 46; ear, 29. Skull: occipito-nasal length, 52; Hensel, 45; zygomatic 

 width, 26; interorbital constriction, 5; length of nasals, 19; palatal 

 length, 23; length of upper molar series, 10 ^length of mandible, 26. 



302. vetulus (Hodomys), Merr., Proc. Acad. Nat. Scien. Phil., 1894, 



P- 236. 

 GRAY-FACED WOOD RAT. 



Type locality. Tehuacan, State of Puebla, Mexico. 



Geogr. Distr. Southern Mexico, State of Puebla. 



Genl. Char. Smaller than H. alleni; tail bicolor; feet white; 

 cranial characters comparatively on smaller scale, but palate propor- 

 tionately longer; frontals broader and less upturned at margins of 

 orbits; third lower molar without antero-external sulcus. 



