68 MR. W. OSBURN ON THE BATS OF JAMAICA. ([Jan. 24, 
“ Molars. Three larger jagged; three lower pointed. 
«Canines. Lower have a second much shorter point in front of 
larger. 
«Incisors. Upper pointed ; each pair of one lateral and one mid- 
dle, placed apart by a space equal to that occupied by each pair. 
Lower deeply double-notched, very minute. 
« Mr. Gosse (Nat. Soj. p. 280), from whose account I have partly 
named this little Bat, says, ‘Long tail; an ample interfemoral, 
which is clothed on upper surface with rufous hair, like body,’ by 
which, I conclude, is meant, the hair was like the fur of the body in 
being rufous, not as to quantity ; for in my specimens a few hairs 
are sparsely sprinkled over the interfemoral, but thicker on the tail 
and caleanea.”’ 
5. CHILONYCTERIS, sp.* 
“ Sportsman’s Hall Cave, 30th November, 1858. 
* Two males, one female. In great numbers in this large cave. 
My servant caught, with a long net, a dozen whilst we were there. 
They flew in swarms along the roof. I know nothing of its habits.” 
“ Sportsman’s Hall Cave, 15th December, 1858. 
«* Two males, one female, stuffed ; one in spirits, injured in bring- 
ing home; four males, one female. 
‘Intestine 6 inches; stomachs contained several minute frag- 
ments of insects much comminuted. 
« Dental formula:—M. ==>, C. $5, I. j=32. 
‘* Upper middle incisors, one deep notch. 
“TI got about a dozen of these little Bats alive. The journey 
home must have had all the horrors of the middle passage ; for I 
found several dead, evidently bitten in pieces by the rest. I sus- 
pected a very lively fruit-eating Bat (no. 6) of the chief slaughter. 
I placed the survivors in a box, with bobbin-net over it, so as to 
observe them. They were not particularly active, merely jumping 
up constantly to escape, but not running much. They clustered 
head downwards, during the day, in any dark and sheltered corner, 
making every now and then, especially when leaping, a sibilant bird- 
like chirp, very different from the ‘click’ of Molossus. This noise 
much increased at about a quarter past five p.m., when their activity 
commenced and renewed efforts to escape. The wings fold very 
completely, so as to leave forearm free whilst resting. ‘The ears are 
then pointing forwards ; they have a rapid and constant motion, but 
confined to their tips, and principally backwards and downwards. 
«T let one fly to observe it, and the calcanea are stretched firmly 
backwards so as to keep the interfemoral tense and flat. At first 
they were very sulky, and would eat nothing. The second day my 
attention was called off; and the third morning I found several dead 
from hunger, with the remains of feeces (which they had eaten) in 
their mouths. 
[* Chilonycteris osburni, Tomes, P. Z. §. 1861, p. 66.—P. L. 8.] 
