LASIOPYGA 301 



Genl. Char. Band on forehead extending around to back of head. 



Color. Face black, white patch on end of nose ; black brow band 

 extending around side of head above ears and across occiput, a branch 

 projecting forward at corner of eye over cheeks to upper lip; near the 

 corner of the eye, a white streak runs over temples and beneath ear to 

 side of neck, beneath which is a corresponding black streak ; top of 

 head speckled yellow and black ; entire rest of upper parts, shoulders, 

 arms and legs on outer side, speckled tawny ochraceous and black, 

 becoming paler on legs below the knees and less thickly speckled ; 

 wrists, hands and feet bjack sparsely speckled with yellow ; beneath the 

 black on cheek the hairs are longer than the rest, and directed upwards 

 and backwards, and with the chin, throat, lower side of neck, chest, 

 entire under parts, and inner side of thighs are white; inner side of 

 forearms and legs gray ; tail at base like back, the yellow speckling 

 becoming lighter as it goes towards the tip where it is almost lost in 

 the dominant black color, beneath yellowish white for basal half, then 

 speckled gray and black, and tip black. 



Measurements. Total length, 1,035; tail, 655; foot, 110. Skull: 

 total length, 111.1 ; occipito-nasal length, 92; intertemporal width, 53.5 ; 

 Hensel, 87; zygomatic width, 71.9; width of braincase, 55; median 

 length of nasals, 19.4; palatal length, 42.6; length of upper molar 

 series, 26.1 ; length of upper canines, 21.7; length of mandible, 77.4; 

 length of lower molar series, 31.7. 



This is a much lighter colored species than L. petaurista, show- 

 ing much less black on the upper parts. The type in Berlin Museum is 

 a baby, not half grown. Herr Matschie has made this a subspecies of 

 L. PETAURISTA Schreb., but as I have never seen any intermediate 

 between it and that species, it seems best, for the present at least, to 

 accord it specific rank. 



Lasiopyga ERYTHEOGASTER (Gray). 



Ccrcopithecus erythrogaster Gray, Proc. Zool. Soc. Lond., 1866, 

 p. 169, pi. XVI ; 1868, p. 182 ; Murie, Proc. Zool. Soc. Lond., 

 1866, p. 380; Gray, Cat. Monkeys, Lemurs and Fruit-eating 

 Bats, Brit. Mus., 1870, p. 128; Schleg., Mus. Pays-Bas, Simiae, 

 1876, p. 69; Sclat., Proc. Zool. Soc. Lond., 1893, p. 252; 1894, 

 p. 1 ; Forbes, Handb. Primates, II, 1894, p. 46; Pousarg., Ann. 

 Scien. Nat., Ill, 7me Ser., 1896, p. 178; Pocock, Proc. Zool. 

 Soc. Lond., II, 1907, p. 715, fig. 185. 



RED-BELLIED GUENON. 



Type locality. Lagos? West Africa. Type in British Museum. 



