296 LASIOPYGA 



the Congo River, L. cephodes, L. nigripes, and L. g. pallida. On the 

 Island of Fernando Po the following species are found: L. martini 

 supposedly, L. erythrotis, L. pogonias, and L. preusse insularis. In 

 Congo State are L. ascanius ranging into Angola, L. a. whitesidei 

 in Central Congo on the Upper Lulong River, L. cynosura (Mossa- 

 medes to Cunene), and L. wolfi, (Brazzaville, Batumpas. Sunkurie), 

 and in the Congo forest, locality unknown, L. insignis, and L. petro- 

 NELL^ are found. Angola contains, L. signata probably at Banana, 

 and L. pluto. In Congoland L. l'hoesti was obtained, but its 

 habitat is quite unknown, and the same may be said of the following: 

 L. nigriviridis, L. inobservata, L. werneri, L. nigrigenis, and L. 

 albitorquata. 



KEY TO THE SUBGENERA. 



A. Body slender; limbs and tail long; cheek pouches 

 present ; fingers webbed at base. 



a. General color various, size small *Allochrocebus, p. 297 



b. General color speckled black and yellow. 



a.' Arms, hands and feet, and body beneath 



black or grayish Melanocehus, p. 306 



b.' Tail red or mostly red ^Neocebus, p. 319 



c' General color grayish, a mingling of gray, 

 black, tawny or yellow in the colors of 

 the hair Chlorocebus, p. 325 



d.' Ears tufted; light colored brow band 

 usually extending upward to the crown, 

 or ears. Stripes on head in some species ; 

 body speckled Mono, p. 349 



e.' White collar present in some species with 

 ear tufts present or absent; aural region 

 red or speckled XInsignicebus, p. 359 



/.' Light colored stripe across thigh. . .Pogonocebus, p. 376 



*oX\oxw<r, strange appearance, and tlPo", a long-tailed monkey, 

 fi-eoff, new, and kvP'", a long-tailed monkey. 



Jlnsignis, remarkable, and Cebus or Ki)^o<r, a long-tailed monkey. 

 To the above key has been added the number of the page on which is each 

 subgenus, so that the groups with their respective keys can be readily found. 



