MAMMALS OF LIBERIA o79 
are especially fond of spending the day underneath the masses of palm-leaf 
thatch of the native huts, a habit so well known to the people, that even the 
small children would run from hut to hut, carefully lifting up the thatch along 
the outside of the circular roofs, to be rewarded by the occasional discovery 
of a few sleepy Pipistrellus, which they would bring to us in triumph. At dusk, 
after it has become just too dark to see to shoot, these little bats drop from the 
edges of the roofs here and there and swinging back and forth once or twice, 
flit off into the night. 
Eptesicus minutus (Temminck) 
Vespertilio minuta Temminck, Monogr. Mammal., vol. 2, p. 209, 1835-1841: South Africa. 
Small, forearm about 29 mm.; light brown above, grayish beneath. Africa, south of the 
Sahara. 
There is but a single record of two adults, a male and a female, taken by 
Biuttikofer and Stampfli on the Du River. Externally the species may be dis- 
tinguished by the somewhat swollen lips and the coloration. It is a wide-rang- 
ing species. 
Eptesicus tenuipinnis (Peters), White-winged Bat 
Vesperus tenuipinnis Peters, Monatsber. Akad. Wiss., Berlin, 1872, p. 263: Guinea. 
Small, forearm 30 mm.; body light brown above, the hairs only slightly darker basally; below, 
white, the hairs with brown bases; membranes translucent white. 
Probably this is not uncommon on the West Coast, although but a single 
specimen was secured by Biittikofer and Stampfli, at Schieffelinsville on the 
Junk River. Miller, however, records a second from St. Paul’s River. It 
chanced that a colony of these pretty little bats inhabited the old house where 
we made headquarters for a time in Monrovia. They gained entrance to some 
cavity in the brickwork of one side through crevices between bricks whence 
they would issue one at a time at intervals of a few seconds shortly after sunset, 
looking very ghost-like as their white wings showed momentarily in the half 
light before they left for the evening’s hunt. By placing an insect net over the 
entrances to their retreat, we secured some twenty individuals, all the adults 
of which were females, some apparently still — July 15 — nursing young. This 
is a very much darker-furred species than EH. phasma of the Sudan, which with 
its less sharply white membranes, may be the desert representative of it. 
Kerivoula africana Dobson. Funnel-eared Bat 
Kerivoula africana Dobson, Cat. Chiroptera Brit. Mus., p. 335, 1878: Zanzibar. 
Small, forearm 29. 5 mm.; brown above, paler below. 
Jentink records as of this species a specimen taken by Biittikofer and Stamp- 
fli at Hill Town on the Du River, at that time the second individual recorded. 
Since the type locality is Zanzibar, however, it seems likely that the West 
African representative is of some other race. 
