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Zoological Society. 305 
PROCEEDINGS OF LEARNED SOCIETIES. 
ZOOLOGICAL SOCIETY. 
May 9, 1848.—W. Yarrell, Esq., V.P., in the Chair. 
The following communications were made to the Meeting :-— 
1. Noriczk oF A NEW SPECIES oF MonkEy FROM ANGOLA, LIVING 
IN THE GARDENS OF THE Society. By J. E. Gray, Esa., 
F.R.S. etc. 
The Society has recently procured a Monkey from Angola, which 
bears some resemblance to the Diadema Monkey which M. F. Cu- 
vier erroneously described and figured as the female of Cercopithecus 
Diana, but it differs from that species in the lips being black, like 
the face, and only covered with very short whitish hairs ; and also in 
being much darker coloured; and this blackness has increased since 
it has been in the possession of the Society and obtained a better 
fur. At first sight I thought that it might be a melanism of some 
other species; but on comparing my notes with the specimens in 
the British Museum collection, I am convinced that it is different 
from any I have before had the opportunity of examining. 
It belongs to the division of the genus Cercopithecus with rounded 
whiskers JSormed of annulated hairs, which have no beard, a variegated 
fur, and black nose and lips, and is easily distinguished from the 
species of that division by its dark colour and broad frontal band. I 
propose to call it 
The Pluto. Cercopithecus Pluto. 
Sp. ch. Black; the hair of the broad frontal band, ringed with 
white; the large rounded whiskers, the back, the upper part of the 
front of the sides, and the base of the tail, rimged with varying 
greenish white; the distal half of the tail black; the face and lips 
black, with short, scattered white hairs. 
Inhab. Angola. 
This species is easily known at first sight by the deep black colour 
of the back of the head, and limbs, and the broad white frontal band: 
the large mantle-like patch of minute, white, grisled hairs on the 
back, and the large size of the black and white ringed whiskers, 
_ giving the whole animal a very striking appearante. 
The tail at this time is not in very good condition, and the end 
appears to have been destroyed. 
2. OBSERVATIONS ON SOME BRAZILIAN Bats, WITH THE DESCRIPTION 
oF A New Genus. By J. E. Gray, Esa., F.R.S. erc. 
Having lately received from Hamburg a collection of Bats from 
Brazil, containing several species which I have not before seen, I 
beg to lay some observations on them before the Society. 
I may premise that they were all named, on what authority I know 
not, and referred to described species, but several of them do not 
agree with the specimens which I have received with the same names 
before, nor with the original descriptions. 
Ann. & Mag. N. Hist. Ser. 2. Vol. iii. 20 
