212 Bulletin American Museum of Natural History. [Vol. XII, 



palatine foramina, 4.3 ; upper toothrow, 4.3 ; lower jaw, length (condyle to 

 incisor tips), 17.5- ; height, angle to condyle, 7. 



This species is based on a single specimen, an adult male, 

 from Los Palmales, Venezuela, but I refer to it provisionally, also, 

 a young adult from Quebrada Secca. 



In the texture of the pelage and in color O. temiicaiida is a 

 miniature of O. velutinus from Trinidad ; it is, however, some- 

 what paler, and the tail is proportionately fully one third longer, 

 and hairy in the apical half instead of entirely naked ; the hind 

 foot is also relatively very much shorter. It seems to possess no 

 very near ally among the described species of northeastern South 

 America. The skull presents nothing peculiar. 



Oryzomys modestus, sp. nov. 



Type, No. 14734, % ad., Campo Alegre (alt. about 3000 ft.), Venezuela ; F. 

 W. Urich. 



Pelage very soft and close, of moderate length. Above dark rufous brown, 

 darkened with an abundance of black-tipped hairs ; sides clearer deep rufous ; 

 below gray, the hairs whitish-tipped, plumbeous at base, which tint enters into 

 the surface color ; forearms gray, feet flesh , color ; hind feet flesh color, thinly- 

 haired ; ears large, dark brown, covered with very short dark brown hairs ; 

 tail blackish brown, unicolor, nearly naked, one fifth shorter than head and 

 body. 



Measurements. Type, total length, 220 mm. ; head and body, 120 ; tail, 

 IOQ ; hind foot, 25, with claws, 28 ; ear, 20. 



Skull, type (imperfect at base), total length, ; basal length, ; zygomatic 

 width, 16 ; interorbital width, 5 ; length of nasals, 12 ; palatal length, 7; pal- 

 atal foramina, 5 ; upper toothrow, 4.5 ; lower jaw, condyle to incisor tips, 19 ; 

 angle to condyle, 7; lower toothrow, 5. The skull presents the usual char- 

 acters of the genus. 



Oryzomys modestus is based on a single adult female from 

 Campo Alegre, near Quebrada Secca, Venezuela. It appears to 

 be very distinct from any previously described species. It differs 

 from O. tenuicauda in its much larger ears, very much .darker 

 coloration, and very short tail, the tail being much shorter than 

 the head and body instead of one third longer, as in O. 

 tenuicauda. 



Oryzomys fulviventer, sp. nov. 



Type, No. 14735, ? a< ^-> Quebrada Secca, Venezuela, Nov. 23, 1898 ; F. 

 W. Urich. 



