MAMMALIA. 
23, 
^Ateks. Four now species aro characterized by Br. Gray, I’roc. Zool, Soc. 
18G5, p. 732 : A. grisescens (Sclater), A. cmiillatus, A.fuscicepSj and A. veU' 
lerosus. 
Ateles cucuUatus. The measurements of an animal in the flesh, and some 
notes on its anatomy, are given by Dr. Murie, Proc. Zool. Soc. 1865, pp. 739- 
740. 
^^HapaU. Dr. Gray distinguishes four subgeneric groups : 1. Ilapale, with 
Jl. aurita (Geoffr.); 2. lacclms^vfx^ H.iacchus, of which I. vulgaris j alhicolUsy 
pmicillatus, and leiicoccphalus are varieties; 3. C'ehuella, with II. pygmcaa 
(Spix); 4. Mico, with II. melamtra (Geoffr.). Proc. Zool. Soc. 1865, p. 734. 
Prof. Giebel has examined the sheletons of Ilapale jncchuSj H. esdipm^ 
and II. rosaliaj and tho skull of II. penicillata, and describes osteological 
characteristics of these species. Zeitschr. gesammt. Ntrwiss. xxv. 1865, 
pp. 257-261. ' 
■^Midas leucogenys, sp. n.. Gray, Proc. Zool. Soc. 1865, p. 735, from Brazil. 
Midas rufiventer (Gray) = M. elcgantxdus (Slack) is characterized, ihid. 
LEMURIDiE. 
^ Prof. ScHLEGEL has determined two species of Lemur, 
from Mayotte (Comoro Islands) , and the other from the north- 
west coast of Madagascar, and enters, on this occasion, upon 
the distinctive characters of the species and their synonymy 
(Ned. Tydschr. Dierk. iii. 1865, pp. 74-78). He divides them 
thus : — 
I. Tail with alternate black and white rings s L. catta. 
II. Tail uniformly coloured. 
A. Ears almost hidden below long hairs : L. varius (Geoffr.) and the 
true X. macaco (L.). 
B. Ears not hidden. 
a. Snout whitish: 1. L. coronaius (Gray) = Z. cJirysampyx (Schuur- 
nian). 2. L. mongoz (L., not Gray and other authors) = X. nigrifrons 
(Geoffr., not F. Cuv.) = Pros^w^^V^ albimana et collaris (Gray, not Geoffr.). 
h. Snout black or blackish brown, 
a. Ears hairy to the margin; L. ruhriventer (Geoffr.) = X. 
venter (Geoffr.). 
Ears with a broad naked marginal band : 1. X. alhifrons 
(Geoffr,). 2. X. ru/ifrons (Benn.). 3. A species nearly always confounded 
with X. mongoz (L.), of a very variable coloration, and consequently de- 
scribed under various names, viz. by Geoffroy as X. collaris, ftdvus (or 
hrimncus, v. d. lloeven); rxifus et albimaxms, by Gray as Prosimia xanthomxjs- 
iax et melanocephala, and probably also as P. anjuanensis (not Geoffr.), and 
by F. Cuvier as X. nigrifrons. The constant characters of this species .are — 
the dark colour of the vertex, a dark band along the median line of tho 
forehead connecting the dark colour of the vertex with that of the snout, a 
broad greyish or reddish band on each side of the dark one descending to 
the cheeks. The dark band varies frequently and much as regards its width, 
but never suppresses the light band entirely. To this species, which may be 
called X, collaris, belongs tho Lemur from Mayotte, but, having a blackish 
