356 LASIOPYGA 



1905, p. 70; Elliot, Cat. Mamm. Field Columb. Mus., F. C. M. 

 Pub., VIII, 1906, p. 569, Zool. Ser. 

 Cercopithecus pogonias Schleg., Mus. Pays-Bas, Simile, 1876, p. 

 82, (Part.). 



GRAY'S GUENON. 



Type locality. Unknown. 



Geogr. Distr. River Congo, Southern Cameroon, (Bates) ; West 

 Africa. 



Genl. Char. Head yellow with three black stripes ; no black on 

 back. 



Color. Male. Brow band exceedingly broad extending to crown 

 cream color, divided in the middle by a narrow black line ; black bands 

 from eye across temples to ears ; top of head, occiput, hind neck, and 

 space between shoulders black, hairs tipped with yellow ; dorsal region 

 speckled rufous and black, becoming jet black at root of tail, the rump 

 but sparsely speckled nearly black ; flanks towards arms speckled yellow 

 and black, the posterior half towards thighs gray, speckled with black 

 and white; sides of face and whiskers yellow, speckled with black; 

 outer side of arms, hands and feet black, speckled with white above 

 elbows; legs on outer side like thighs grizzled iron gray; entire under 

 parts, and inner side of limbs orange buff, the hairs being yellowish 

 white at base; tail above jet black, beneath buff yellow, apical portion 

 orange buff; ear tufts ochraceous buff. 



Measurements. Total length, 1,417; tail, 870; foot, 142; ear, 28, 

 (Collector). Skull : total length, 100; occipito-nasal length, 86.3 ; inter- 

 temporal width, 44.5; Hensel, 68.3; zygomatic width, 68.4; width of 

 braincase, 55.4; median length of nasals, 14; palatal length, 31.3 ; length 

 of upper molar series, 24.7; length of upper canines, 20.1 ; length of 

 mandible, 69.7; length of lower molar series, 28.2. 



Lasiopyga grayi pallida (Elliot). 



Cercopithecus pogonias pallidus Elliot, Ann. Mag. Nat. Hist., IV, 

 8th Sen, 1909, p. 261. 



Type locality. Gaboon. Type in British Museum, ex Laglaize 

 Collection. 



Geogr. Distr. Gaboon. 



Genl. Char. Similar to L. grayi, but paler beneath, no uniform 

 black on rump, hairs speckled like back to root of tail. 



Color. Female. Forehead like L. grayi : upper part of head, hind 

 neck and between shoulders redder, speckled with buff yellow and 

 black, the buff yellow being the dominant color and giving the tone 



