254 SYNOPSIS OF THE SJMIAD^. 



tbe upper parts purplish brown ; a white band surrounding 

 the back of the neck. Inhabits Ethiopia. 

 6. C. ATYS, the Atys Simia atys, Audeb. Atys, Geoff. 

 Ann. du Mus. xix. p. 99. Guenon atys, Desm. Mamm. 

 p. 62. Entirely of a yellowish- white ; the naked parts of 

 the skin flesh-coloured. (By Geoffrey it is said to be an 

 albino variety of some unknown species, and to inhabit 

 India.) 



GENUS XIII. MacacitS) LACEPEDE. 

 Facial angle about 40 or 45 ; muzzle elongated ; superciliary 



ridges distinct ; canine teeth strong and large (longer than in the 



preceding genus ;) the tail shorter than the third of the length of 



the body, or more ; the form strong and compact. 



PLATE XIV. 1. M. SILENUS, the Ouanderow. Simia canina, 

 Penn. Macaque a criniere, Cuv. Reg. An. Papio silenus, 

 Geoff. Ann. du Mus. xix. p. a OO. Macaque ouanderow t 

 Desm. Mamm. p. 63. Above blaA ; the hair of the back 

 of the neck long, and, with the beard, Arming a thick ruff, 

 gray ; under parts gray ; tail ending witu a tuft of hairs. 

 Inhabits the Island of Ceylon. 



2. M. SINICUS, Chinese Monkey Simia sinica, Li&n. Bon- 



net-chinois, Audab. Cercocebe bonnet-chinois, Geoff. 

 Ann. du Mus. xix. p. 64. Macaque bonnet-chinois, Desm. 

 Mamm. p. 64. Chestnut-brown, paler beneath ; hair of 

 the crown long, and spreading out from the centre to the 

 sides. Inhabits Bengal and Ceylon. 



3. M. RADIATUS, the Toque Cercocebe toque, Geoff. Ann. 

 du Mus. xix. p. 98. Macaque toque, Desm. Mamm p. 64. 

 Above greenish-brown ; beneath gray ; hair of the crown 

 long, and spreading out from the centre to the sides. In- 

 habits India. 



Nos. 2 and 3 are closely allied to Cercocebus, and their station fe 

 the System does not seem clearly established. They are In- 

 teresting forms, and ought to be kept in view by tho "oologist. 



