84 
JOUBNAL OF MAMMALOGY 
base of the long hairs on the back, has much less ochraceous on the 
flanks and hind limbs, and differs particularly in skull characters in the 
greatly extended post palatal region. The enamel pattern of the 
molars is practically identical mdactylinus and holiviensis. 
The palate of D. typus [= D. dactylinus] flgured in the Revue et 
Magasin de Zoologie for 1852, plate 16 (text flgure 4), shows that the 
postpalatal region in dactylinus (text flgure 3) is much shorter than in 
holiviensis and the same as in the museum specimen from Villavicencio.® 
Dactylomys dactylinus canescens, described by Thomas in the Annals 
and Magazine of Natural History for 1912, page 87, is of the dacty- 
linus type with “rusty color of under fur strongly marked along the 
Fig. 3. Palate of Dactylomys Fig. 4. Palate of Dactylomys 
DACTYLINUS, No. 34594, TYPus [=D. dactylinus]. Copied 
Natural Size from Revue et mag. de Zool., 
1852, Natural Size 
middle dorsal area.’^ The skull of holiviensis is smaller than that of d, 
canescens, Thomas’s measurement of upper tooth-series being 21.5 
mm. as against a length of 17.7 in holiviensis. 
The type is the only specimen of this species secured. 
Chrotopterus colombianus sp. nov. 
Type, No. 38966, Dept, of Mammalogy, sex indet., Rio Quatequia, near Bogota, 
Colombia; collector, Hermano Apolinar Maria. The type is a complete skin 
with skull, the pelage being in good condition but the bones of both forearms 
are broken and not measurable. The type locality is on one of the upper 
tributaries of the Rio Meta about fifty miles to the east of Bogota. 
Characters . — Size about as in auritus but darker brown above, yellowish brown 
instead of gray below, and tragus quite broad and blunt. 
® The Villavicencio specimen has the posterior margin of the palate somewhat 
broken, so that the exact extent of the palate may be only approximated. 
