36 bulletin: museum of comparative zoology. 



Description. — The color of the fur cannot now be determined accurately, as 

 the specimens examined have been in alcohol for many years ; both above and 

 below the bases of the hairs are pale tipped with darker. Thomas states that in 

 the allied species, L. mordax, the hairs are cinnamon-brown above and wood-brown 

 below, with whitish bases. 



Both above and below the fur of the body extends out on the membranes as far 

 as a line drawn from the middle of the humerus to the middle of the femur ; a few 

 scattered minute hairs on tibiae, toes, and lower surface of the interfemoral 

 membrane. 



Ear oval, the inner margin slightly convex to the broadly rounded-off tip. 

 Outer margin very slightly concave from the tip to the middle, thence slightly 

 convex to the shallow basal notch, which is succeeded by a low rounded lobe. 

 Tragus tongue-shaped, pointed, its inner margin thickened ; a small notch cuts 

 off a basal lobe externally. Nose leaf triangular, slightly higher than broad, 

 sides slightly concave at the upper third. Wings from the tarsus; interfemoral 

 with its free edge slightly emarginate. Tail included in the basal third of in- 

 terfemoral, but tip free on upper surface. 



The lower lip is marked by a deep triangular median furrow, the sides of which 

 are bordered by about five small rounded lobules, the distal of which is expanded 

 laterally into a thin flat plate. The shape of this expansion is not the same in all 

 the specimens, and it may be partially divided by a shallow notch of varying depth. 

 In the alcoholic specimens of Glossophaga examined, the lobules or papillae bor- 

 dering the labial groove are all small and roundish, and do not show the expansion 

 found in the terminal ones of Lonchophylla. Thomas (Ann. Mag. Nat. Hist., 

 1903, ser. 7, vol. 12, p. 459) in his description of the genus, was unable to deter- 

 mine whether or not the labial groove was present, as his specimens were all dried 

 skins. The Peruvian species, however, shows this groove, as well as the peculi- 

 arities of the bordering papillae which may prove to be of generic value. (PI. 1, 



Fig- 7) 



Skull and Teeth. — The skull is long, with a narrow rostrum, and the lower jaw 

 projects beyond the upper incisors. The symphysis is sharply keeled ; zygomata 

 incompletely ossified. The lower incisors form a slightly convex row, and the 

 outer ones on each side do not quite touch the canine. Lower canines simple and 

 slender, but the upper canines have a very distinct postero-internal cingulum cusp, 

 which does not seem to have been previously noticed in the genus. Upper and 

 lower premolars slightly spaced, though the first lower premolar is practically in 

 contact with the canine. Both the upper premolars and the second and third 

 lower ones have each a slight cingulum cusp anteriorly and posteriorly. 



Measurements. — External measurements of the type : head and body, 60 ; 

 tail, 9 ; depth of interfemoral, 21 ; forearm, 38 ; thumb, 9; 2d digit, metacarpal, 

 35 ; 3d digit, metacarpal, 41; 1st phalanx, 12; 2d phalanx, 20.6; 3d phalanx 

 and tip, 8.5 ; 4th digit, metacarpal, 35.6; 1st phalanx, 9.5 ; 2d phalanx and tip, 

 12; 5th digit, metacarpal, 35.5; 1st phalanx, 9.7; 2d phalanx and tip, 11.5; 

 tibia, 14 ; foot, 8 ; calcar, 8.8 ; ear from meatus, 14.5 ; tragus, 5.7 ; nose leaf from 

 lip, 8. 



