^2 ZOOLOGICAL LITEl^ATUllE. 
M. Gratiolet has recognized in a large Chimpanzee from 
Tropical Africa a distinct species, which he names Troglodytes 
aubryi (Compt. Rend. lix. p. 321 ; Rev. et Mag. Zool. xvi, p. 266). 
It is distinguished hy an entirely black face, and by a well-dc- , 
veloped talon on the hinder part of the last lower molar. In 
dissecting this specimen and other Anthropoid Apes, he paid par- 
ticular attention to the forearm and the hand, comparing it 
with those of Man, and shows that the large muscle which moves 
the thumb independently of the other digits in Man is entirely 
absent in the Gorilla and Chimpanzees, and that the thumb-por- 
tion of the tendon of the m. flexor digitorum communis is still 
more reduced in size than even in other monkeys. The author 
did not live to see the final publication of this last work of his ; 
but in it he expressed his full conviction that anatomical facts 
have not given any foundation to the idea of a close affinity 
between Man and Ape. 
^ Dr. Crisp has discovered an os penis in the Gorilla, as well as 
in the Chimpanzee. Proc. Zool. Soc. 1865, p. 48. 
l*rof. Wyman has given comparative measurements of the pelyis and limbs 
in two Europeans, a Hottentot, a Chimpanzee, and a Gorilla. Proc. Bost. 
Soc. Nat. Hist. ix. p. 366. 
SemmpUhecm entellus. Mr. E. Ray Lankester has examined and figured 
the brain. Quart, Journ. Science, 1806, pp. 602-606. 
^ Colohus gitereza. Dr. Murie has examined the anatomy of this species, 
which does not show any differences from that of the species examined by 
Prof. Owen. Proc. Zool. Soc. 1866, p. 744. 
4 Cei'OQpithecm mhceus. The muscles of the extremities are described by Mr. 
Mivart. Proc. Zool. Soc. 1865, pp. 43-46. 
I Cercocehus alhigena. Dr. Murie has compared the skull of Presbgtes albigcna 
(Gray) with those of Semnopithecus, and confirms the opinion of M. Pucheran 
as to the propriety of referring this species to Cercoccbus, Proc. ZooJ. Soc. 
1865, p. 740. 
4 Macacus ocreatus, fig. in Zoolog. Sketch, by Wolf and Sclater, vol. ii. 
■ '^Inmcs assamensis (Maclell.) is, according to Mr. Blyth, probably merely an 
individual variety of colour of I. rhesus, Journ. As. Soc. Beng. 1865, p. 102. 
Captain Hutton (ibid. 1864, Append, p. xiii) had stated in a note that this 
I. assamensis and I.pelops (Hodgs.) are totally distinct species. 
Cebid^. 
Cebus. Dr. Gray (Proc. Zool. Soc. 1865) has examined the 
specimens of this genus in the British Museum, and enumerates 
sixteen species, of which the following are characterized as 
new : — 
C. leucogenys, p. 825, pi. 45, from Brazil ; C. leucocephalus, p. 827, from 
Columbia ; C. Jlavescens, p. 827, from Brazil j C. annellatus, p. 827, from 
Brazil j C. subc^ istatus^ p. 827, from Brazil j and C. cupillat{(s, p. 827, from 
Brazil. 
