94 BANGS— SANTA MARTA MAMMALS [Pas 
of course possible that one or two of Dr. Allen’s names may even- 
tually hold good. 
Oryzomys flavicans illectus Bangs. 
Oryzomys flavicans illectus Bangs, Proc. Biol. Soc. Wash., Vol. 
XII, p. 164, Aug. 10, 1898. 
Oryzomys trichurus Allen, Bull. Amer. Mus. N. H., Vol. XII, p. 
206, Dec. 20, 1899 (in part ?). 
Type locality: Pueblo Viejo, 8000 feet altitude, Colombia. 
Eight specimens from La Concepcion, Pueblo Viejo, Palomina 
and San Antonio, altitudes ranging from 3000 to 8000 feet. 
The deep orange-buff color of the under parts of this form dis- 
tinguish it from true O. favicans Thomas of Merida, Venezuela. 
Though some of our specimens are not so deeply colored below 
as others, yet none of them are whitish as in true favicans. From 
Dr. Allen’s description of O. ¢richurus I cannot help feeling that 
he has confused this form (O. flavicans ilectus) with Rhipidomys 
venezuele, which latter is a common animal in the Santa Marta 
Mountains. It has a general external resemblance to O. favicans 
illectus, except that the tail is hairy and the under parts are clear 
white to roots of hairs,— just the characters Allen claims for his 
O. trichurus. ‘The specimen he mentions from Minca is undoubt- 
edly O. flavicans illectus, \ike some of ours with the paler under 
parts. 
OLIGORYZOMYS subgen. nov. 
(MURIDA: CRICE TINA) 
Type: Oryzomys navus Bangs. 
Characters.— Size very small; tail long; hind foot long and slender; fifth 
hind toe moderately long; (general external appearance that of the larger 
species of Reithrodontomys—R. mexicanus group). Skull small, delicate; 
interorbital region narrow; outer edges of frontals squarish but unbeaded; 
brain-case smooth and unridged; zygomatic plate narrow and with but slight 
forward projection; a decided longitudinal depression or trough in middle of 
nasals; molar teeth small and delicate, but essentially like those of true Ovy- 
zomys ; incisor teeth very narrow and delicate. (Plate I, fig. 2.) 
Remarks.—The small species of Ovyzomys usually called 
“‘pigmy oryzomys” form a fairly compact group for which it is 
convenient to have a subgeneric name. It is true that in impor- 
