152 Lyon A New Bat from Colombia. 



face is marked by two stripes of light broccoli-brown 1-1.5 mm. in width, 

 one on each side extending from the posterior base of the nose-leaf, up 

 over the eye, to nearly as far back as the occiput. The two lower face 

 markings from each angle of the mouth to each ear, are scarcely definable. 



Hair covers the forearm above for about two-thirds its length, extend 

 ing out on the membrane for about 5 mm. The underside of the forearm 

 is scantily covered with short hairs for about the same distance and the 

 hair extends about 10 mm. on the membrane. Interfemoral membrane 

 scantily covered above and below, with hairs like those on the back and 

 belly, the hairs forming a fringe on the posterior border. Length of 

 hair on back 8 mm., on belly 5 mm. 



Skull. Like that of Vampyrops lineatus, but larger in every way and 

 with heavier teeth. The last upper molar is different in shape, being 

 disproportionately wider, from side to side, than the same tooth in V. 

 lineatus. 



Measurements of type. (The figures in parenthesis are those of an 

 adult specimen from Paraguay: Wm. T. Foster, No. 361). Forearm, 43 

 (46): longest finger, 104 (102); tibia, 15 (17); calcar, 5 (7); foot, 12 (12); 

 greatest length of skull, 27.2 (25); zygomatic breadth, 15.6 (15); front of 

 upper canine to posterior edge of last upper molar 10.4 (8.2); width of 

 last upper molar, 1.2 (0.8); distance between outer angles of second upper 

 molars at alveoli, 11.2 (10.4); greatest length of mandible, 18 (17). 



Remarks. Vampyrops umbratus needs comparison with no other 

 species than lineatus. It is darker throughout, has a slightly smaller 

 body and a distinctly larger skull. The color of lineatus is a broccoli- or 

 hair-brown, in contrast to the seal-brown of umbratus. The stripe down 

 the back of lineatus is pure white and from two to three times the width 

 of the whitish stripe down the back of umbratus. The face stripes in 

 lineatus are white and distinct, in umbratus they are a light broccoli- 

 brown and ill-defined, especially the lower markings. The nose-leafs 

 and ears show no apparent differences in the dried skins of the two 

 species. 



Vampyrops umbratus is represented by three specimens, all in Bangs' 

 Collection in Museum of Comparative Zoology; the type, No. 8180, from 

 San Miguel, No. 8300, from San Antonio, and No. 8301, from Palamina, 

 Colombia. The two latter are entirely uniform with the type in point 

 of size and coloration. Unfortunately they are not accompanied by 

 skulls. 



