212 Miscellaneous. 
Curculio Bacchus, Linn., but not of Marsham, had been captured on 
the 20th of September last on a young oak-tree at Birchwood, Kent, 
by Mr. B. Standish; Mr. J. F. Stephens however stated that he had 
taken both R. Bacchus and auratus from the same tree at Crayford. 
MISCELLANEOUS. 
DESCRIPTION OF A NEW SPECIES OF AFRICAN MONKEY. 
Black-cheeked Ascagne, Cercopithecus melanogenys, n. s. 
Black, olive speckled ; ears, middle of the back and end of tail red- 
dish ; sides and outer side of the limbs grayish; hands and feet, 
frontal band, and lower part of the cheeks black ; temples yellowish, 
broad cordate spot on the nose white ; chin, chest and beneath ashy 
white. 
Inhab. Africa. British Museum. 
This species is at once known from the Cercopithecus Petaurista, 
with which it appears to have been confounded, by the distribution 
of the colour on the cheeks : in this species they are black below and 
yellowish above, while in that they are black above and yellow be- 
neath, like the throat and chest, and in the spot of the nose, which 
is ovate and elongate in C. Petaurista, and broad and cordate in the 
one now described, and it also differs in the general colouring of the 
fur. 
The species of this genus may be thus divided :— 
a. Face flesh-coloured, whiskers white: C. Cynosurus. 
b. Face black, whiskers white. * Frontal band none: C. Sabeus. 
** Frontal band distinct, not bearded: C. pygerythrus, C. Engy- 
thithia and C. ruber, *** Frontal band distinct, chin bearded : 
C. Diana. 
c. Face black, whiskers annulated : C. albogularis, C. Monu, C. Camp- 
bellii ?, C. leucocampyx, C. labiatus, C. Temminckii, C. Burnettii, 
C. Pogonias. 
d. Nose reddish: C. erythrotis. 
e. Nose blue, white beneath: C. Cephus. 
jf. Nose white: C. nictitans, C. Petaurista, and C. melanogenys. 
J. E. Gray. 
MEXICAN FOSSILS. 
In a letter to Prof. Bronn, M. Claussen states that he has again 
found in Brazil a great many fossil bones, and among them the head 
of a large tiger related to Felis meganthereon (Ursus cultridens), but 
it is much larger; the upper canine teeth are nearly 10 inches long 
and 14 broad. The French Institute has purchased it for 4000 francs. 
The remainder of the collection, except the duplicates, has been dis- 
posed of to the British Museum. He promises subsequently to com- 
municate some remarks on the occurrence of these fossil bones, and 
especially on that of the human remains, which are found among 
the bones of various extinct animals. He has discovered two kinds 
of monkeys, which approximate to the genera Mycetes and Cebus. A 
