LASIOPYGA 347 



Measurements. Total length, 990; tail, 570; foot, 120; ear, 28. 

 Skull: total length, 90.7; occipito-nasal length, 79.4; Hensel, 60.3; 

 zygomatic width, 61.1; intertemporal width, 43.6; palatal length, 31; 

 median length of nasals, .94; length of upper molar series, 23.8; length 

 of mandible, 67 ; length of lower molar series, 29.9. Ex type United 

 States National Museum. 



Similar to L. c. johnstoni, but under parts buff. Two specimens, 

 both females, immature, in United States National Museum. The 

 under parts, and inner side of limbs of these examples are conspicu- 

 ously buff, strongly contrasted with the yellowish white of L. cen- 

 tralis, or grayish white of L. c. johnstoni. 



LaSIOPYGA SILACEA (Elliot). 



Cercopithecus silaceus Elliot, Ann. Mag. Nat. Hist., IV, 8th Ser., 

 1909, p. 263. 



Type locality. East bank of the Loangwa River, Angoniland, 

 Northwest Rhodesia. Type in British Museum. 



Geogr. Distr. Loangwa River to Angola, West Africa. 



Genl. Char. General hue yellowish green, speckled with yellow 

 on the flanks and with no distinct black speckling. 



Color. Grayish white brow band over eyes, mixed with black on 

 hairs over nose, and at each end of band; hairs on head standing up- 

 right on front, speckled with black and tawny, the latter being the 

 prevailing color ; dorsal region from nape to tail speckled black and 

 buff yellow, the back being equally prominent with the lighter color, 

 especially on dorsal line from between shoulders and on lower back 

 and rump, making these parts darker ; back below shoulders on either 

 side of the dorsal line, and flanks, buff yellow, annulated and tipped 

 with brownish black, the lighter color, however, predominating to the 

 extent of giving all these parts a yellowish appearance; shoulders 

 darker than flanks, but not so dark as dorsal line, the hairs speckled 

 ochraceous and black ; outer side of arms and legs gray, speckled on 

 arms above elbows, and on thighs with cream color and black, and on 

 forearms and legs below knees, with black and white ; wrists and hands 

 black speckled with white ; feet gray and black speckled, toes brown- 

 ish black, with some white hairs intermingled; whiskers long, directed 

 backwards hiding the ears, cream color annulated with black; face, 

 lips and chin covered with short brownish black hairs ; sides of neck, 

 throat, inner side of limbs, and entire under parts white ; tail above 

 for three fourths the length speckled cream color and black, rest jet 



