96 TlMEHRI. 
the males and females equally matched and associated 
together, frequently paired and the pairs at short distances 
apart. 
In many of the large and hollow trees, no doubt many 
coloniesofdifferentspecies frequently take refuge together, 
but whether they will ever be found associated in the same 
group is doubtful. From a large and hollow Oronoque 
tree (Erythrinus glauca) in the long Avenue of the 
Botanic Gardens — a tree from which a very strong and 
unpleasant odour floated on the breeze, to be detected 
by any one passing along the Avenue, — we suc- 
ceeded, by carefully fixing a large netting at one large 
opening, and stopping up the others so as to keep in the 
smoke from burning straw, in procuring no specimens, 
45 males and 65 females, of three distinct species — in 
fa6l, representatives of three distinct genera and of two 
families. Of a species of Phyllostoma, there were 32 
males and 5 1 females ; of Nodltlto leporinus 1 1 males 
and 1 1 females ; and of an undetermined species of 
Molossus, 2 males and 3 females. A few of this number 
were quite young; others were nearly adult; while many 
of the females were pregnant, and, in all the cases ex- 
amined, contained but one foetus. In no pregnant bat at 
any time examined by me, has there ever been more than 
one young. 
During the smoking operation, 8 bats flew away; and 
no doubt a considerable number took refuge in little 
fissures and holes inside the tree and there died. The 
cries of several were heard afterwards, but we neither 
got the specimens nor saw them come out. At the 
same tree three specimens had been knocked down the 
evening before as they issued from their refuge. On 
