THE OWL-FACED BAT. 
327 
than* in the hand, probably from the great extension 
of the interfemoral membrane. 
Ill captivity it uttered once or twice, very slightly, 
the peculiar short sound resembling the clicking of 
some delicate piece of machinery, which every one 
who is familiar with living Bats will remember as 
common to most of these animals.^ It was very 
active, leaping up to flight from the table, and ex- 
panding the wings in a moment, though confined 
within a candle-shade. It bit fiercely at the hand 
that held it, but could not draw blood from the 
fingers. It usually carried the apical half of the 
interfemoral bent upward at the point where it ceases 
to embrace the tail, so that the tail seems to extend 
beyond the membrane. It is held thus by the cal- 
carea, the tips of which, curving downward, carry 
down again the tip of the membrane, puckered into 
minute plicae. This was usually (not invariably) the 
case, when held in the hand ; how it might be in 
flight, I did not observe ; but I suspect that the 
interfemoral would then be wholly expanded. It 
died sooner than I expected, and thus precluded my 
further observations of its living manners. 
I never saw that very curious form, Mormoops 
Blainvillii, alive ; but Mr. Hill was so kind as to 
present me with a specimen in fine preservation in 
spirits. It had been captured at Spanish Town 
* I have heard the Marmozette Monkey (Jacchus) produce the 
very same sound; a curious little collateral evidence, if any were 
wanting, of the correctness of the principles, which impelled the 
sagacious Linnaeus to place the Bats among his Primates. 
