322 LAS/OPYCA 



Lasiopyga inobservata (Elliot). 



Cercopithecus inobservatus Elliot, Ann. Mag. Nat. Hist., V, 8th 

 Sen, 1910, p. 81. 



Type locality. West Africa, exact locality unknown. Type in 

 British Museum. 



Genl. Char. Allied to L. cephus, but body very differently 

 colored, and with a conspicuous rufous band on brow behind the 

 yellow and black superciliary line. When the two species are placed 

 side by side L. cephus appears a reddish monkey, and L. inobservata 

 a yellowish animal. 



Color. A rufous colored brow band, having a superciliary line in 

 front, and top of head behind yellowish, the hairs being banded with 

 orange ochraceous and black, the tips being black, but the ochraceous 

 bands give the dominant hue; remainder of head on top black, hairs 

 tipped with yellow, entire rest of upper parts, shoulders and thighs 

 ochraceous, much paler and less red than the same parts of L. cephus, 

 the hairs being pale gray at base and then banded with black and 

 ochraceous and tipped with black. Black band from eye to ear ; sides 

 of face beneath, black and yellow ; cheeks, and a broad line down sides 

 of face black, hairs banded with yellowish white; hairs on lips and 

 chin black ; throat grayish white ; entire under parts, inner side of arms 

 to elbows, and legs to ankles, dark smoke gray, much darker than L. 

 CEPHUS ; forearms, hands and feet blackish, sparsely speckled with pale 

 yellow ; tail above with basal portion like back, then blackish maroon 

 grading into pale bright red, beneath gray at base grading into pale red. 

 Ex type British Museum. 



Measurements. Total length, 1,330; tail, 750; foot, 145. Skull: 

 total length, 119.6; occipito-nasal length, 90.7; intertemporal width, 

 40.9; breadth of braincase, 56.8; Hensel, 79; zygomatic width, 73.2; 

 palatal length, 41.5 ; length of upper canines, 20; length of upper molar 

 series, 25.5 ; length of mandible, 78.3 ; length of lower molar series, 

 32.2. Ex type British Museum. 



In the description of this species the following comments were 

 made : 



"The skull when compared with the skull of a male L. cephus of 

 a corresponding age, is seen to have a considerably greater total length, 

 longer and more protruding rostrum, and longer and broader braincase 

 posteriorly. The orbits are quite a different shape, more circular than 

 oblong, and the extreme width greater. The teeth are much larger, 

 and the upper molar series longer by nearly the width of the first pre- 



