
746 The American Naturalist [August, 
the middle of humerus to the knee and the side of the body is scantily 
haired. 
Interfemoral membrane with a small, triangular patch of hair on its. 
upper surface, covering base of tail, and extending to one-fourth of its 
length. 
Legs and arms naked. Wing extending from base of outer toe. 
Antebranchial membrane losing itself at middle of radius. Two 
caudal vertebre free from membrane. : 
Black glandular prominences between eyes and nostrils well devel- 
oped, fringed with longish hairs on both upper and lower edges, and 
with three or four long, black, bristly hairs growing from its upper 
surface. í 
Inner edge of ear conch evenly convex. Outer edge coming up, in 
an even, sweeping curve, from angle of mouth to level of tip of tragus, 
where it meets a slightly concave line leading up to the obtusely 
rounded tip. A nearly semi-circular antitragus is developed from that 
part of the conch passing below the tragus. Bone of inner margin of 
tragus concave, thus throwing this organ forward, followed by a straight 
margin. Bone of outer margin with a sub-triangular lobe, followed 
by a deep notch, above which the greatest width is quickly reached. 
From here a nearly straight line leads to the tip, which is obtusely 
rounded. (See Fig. 2.) 
Measurements in millimeters: Length of head and body, from tip 
of nose to base of tail, 37.5 ; length of tail, 36; length of tail beyond 
membrane, 3; length of head, 15; height of ear, from notch between 
antitragus and conch to tip, 10; height of tragus, inner margin, 4.5 5 
height of tragus, outer margin, 6; greatest width of tragus, 2; length 
of antitragus, 2; height of antitragus (approximately), .75; length 
of forearm, 31; length of thumb, including claw and excluding meta- 
carpus, 7.5. Second digit—metacarpal, 29. Third digit—metacarpal, 
30.5; first phalanx, 11.5; second phalanx, 11; cartilaginous tip, 5. 
Fourth digit—metacarpal, 29 ; first ‘phalanx, 10; second phalanx, 7 ; 
cartilaginous tip, 2.5. Fifth digit—metacarpal, 28; first phalanx, 
8.5; second phalanx, 5; cartilaginous tip, 1. Interspace between 
tips of third and fourth digits, 16 ; interspace between tips of fourth 
and fifth digits, 37; interspace between tip of fifth digit and juncture 
of membrane with foot, 42; extent of outstretched wings, 212; length 
of tibia, 13.5 ; length of foot, 9 ; length of calcaneum, about 8. 
Teet ie = ES = 30. 
Middle upper incisors separated by 1.5 mm., inclined forwards and 
inwards ; a large internal cusp on posterior-external edge halfway up 



