CERCOCEBUS 263 



But Linnaeus' Simla cuthiops is a Lasiopyga, and has nothing to do with 

 the members of the present genus, and there is no law known that 

 forbids the same specific name to be given to two species of different 

 genera. C. .ethiops (Schreb.), is therefore perfectly applicable to a 

 Cercocebus, and ^thiops Linnaeus to a Lasiopyga, if the species 

 can be determined, which in this case, unfortunately cannot be, and the 

 confusion that has existed among Authors in regard to this name, has 

 arisen from the supposition that Linnaeus and Schreber referred to 

 animals in the same genus, which is not the fact. 



Ceecocebus lunulatus Temminck. 



Cercocebus ccthiops L Geoff., Cat. Primates, 185L P- 25, (nee E. 



Geoff.) ; Gray, Cat. Monkeys, Lemurs and Fruit-eating Bats, 



Brit. Mus., 1870, p. 27. 

 Cercopithecus lunulatus Temm., Esquis. Guin., 1853, p. 37. 

 Cercocebus lunulatus De Winton, in Anders., Zool. Egypt., Mamm., 



1902, p. 15; Pocock, Ann.. Mag. Nat. Hist., XVIII, 7th Ser., 



1906, p. 279; Id. Proc. Zool. Soc. Lond., 1906, p. 358. 



WHITE-CROWNED MANGABEY. 



Type locality. "Ethiopia." 



Geogr. Distr. Gold Coast, West Coast of Africa. 



Genl. Char. Similar to, but darker above than C. cethiops 

 (Schreber), with a grayish white spot on occiput, and a narrow black 

 line along the back of the same ; eyelids white. 



Color. Face flesh color; top of head blackish brown; a large 

 yellowish white patch on back of head ; side of head yellowish white ; 

 upper part of body and outer side of limbs brownish drab with a 

 purplish tinge ; under parts and inner side of arms yellowish white ; tail 

 above black, beneath like body ; hands and feet Vandyke brown. 



Measurements. Total length, 3 ft. 4 in. ; tail, 1 ft. 7 in. Skull : 

 total length, 121 ; occipito-nasal length, 93 ; Hensel, 82 ; zygomatic 

 width, 78 ; intertemporal width, 45 ; median length of nasals, 16 ; length 

 of upper molar series, 35; length of mandible, 76; length of lower 

 molar series, 41. 



Pocock, (1. c.) and all subsequent Authors make this species the 

 same as C. athiops Geoff roy, (E. Geoff roy I suppose is intended). This 

 is not the fact, for the C. cethiops E. Geoffrey, is the Mangabey a 

 collier blanc of Buffon, the C. torquatus of Kerr ; while the C. athiops 

 I. Geoffroy is the C. lunulatus of Temminck. The type of C. lunu- 

 latus Temm., is not in the Leyden Museum, nor any specimen bearing 

 that name. 



