158 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
VOL. X.XIV. 
29. MOLOSSUS OBSCURUS Geoffroy. 
LITTLK MOLOSSUH. 
1.S78. Molossvs ohsrurvK Dobson, Cat. Chiroi")t. Brit. Mus., p. 410. 
1897. Molot<ms ohsctirits Allen and Chapman, Bull. Amer. Mus. Nat. Hitst., IX, p. 14. 
First obtained 1)}^ Captain Robinson, at San Julian, in tlie form of a 
slvull taken from the stomach of a bat falcon {Falco cdhogularis, 
Daudin). Later five others were secured at Macuto. Its habits and 
flight are identical with those of the larger 3L rufus. 
Measurements. 
No. 
Sex. 
Length. 
Tail. 
Forearm. 
Longest 
finger. 
Tibia. 
Foot. 
Remarks. 
102798 
102799 
102800 
102801 
102802 
Female 
95 
90 
96 
87 
76 
32 
30 
31 
31 
23 
38 
36 
40 
39 
28 
75 
69 
72 
73 
45 
12 
12 
13 
12 
12 
8 
8 
9 
8 
8 
Alcoholic, 
do. 
Skin. 
do. 
do. 
do 
Male 
Female 
Young female . . 
30. PEROPTERYX KAPPLERI Peters. 
LARGE SAC-WINGED BAT. 
1878. Saccoj)tfriix kappierl Dobson, Cat. Chiropt. Brit. INIus., p. 374. 
This bat, which has usually been regarded as a mere local variety 
or an age variation of I^. canina, is represented by a splendid series 
of 16 specimens, all taken by Captain Robinson, at San Julian. 
The tail is free for 3 mm. on the upper surface of the membrane, 
which extends for 24 mm. beyond the tip. 
The first of these bats was prodded out from a deep crevice that 
extended horizontally under a large bowlder, and was caught in a but- 
terfly net. It was alone. Several weeks later a number were discov- 
ered in a small cave formed by a huge rock that rested against a larger 
vertical one, leaving a tunnel-like opening beneath. This and the 
following species resemble each other closel}^ in habits and general 
form, but differ in size and color. Their pointed muzzle and over- 
hanging upper lip, pompadour bang, and protruding eyes, rather large 
for a bat and much more protuberant than in other genera, give them 
somewhat the countenance of a King Charles spaniel. The two nip- 
ples of the nursing females are long and fusiform. The wing sacs are 
much larger in the males than in the females, but do not approach in 
size those of Saccopteryx leptura. 
Some were found hanging from a horizontal surface, but the 
majoritj" clung to a more or less vertical wall. They can be told at a 
glance, as they brace themselves by their widely-spread forearms 
which, being excessively long, give them a rather " sprangly ■' 
appearance. They are easily caught, some even permitting them- 
selves to be picked off' by hand, while the Glossopkagas, which inhabit 
similar caves, begin to flutter al)out at the first intrusion and seek to 
dart by and escape. 
