PITHECUS 189 



a." Color dark brown and buff in 



bands, giving a reddish brown hue P. siiiicus. 



b." Color dark reddish brown P. pileatus. 



h! Hairs on head not radiating from a 

 central point. 



a" Color isabella speckled with buff P. rcsimus. 



b." Color Prout's brown washed with 



olive and speckled with buff P. validus. 



c." Color hazel with black and tawny 



annulations P. alacer. 



d." Color tawny ochraceous, hairs 



purplish gray and banded with 



tawny ochraceous and black P. karimoni. 



e." Color blackish brown, hairs 



banded with wood brown P. fuscus. 



E. Tail as long as, or exceeding the head and body. 



a. Hands black and buff, color blackish, hairs 



with subterminal cream buff ring P. umbrosus. 



b. Hands brownish black ; color grayish olive 



banded with cream buff P. irus. 



c. Hands gray ; color reddish brown, 



speckled with golden buff and blackish 



brown P. ntordax. 



d. Hands olive gray, color tawny umber; 



ascending ramus of mandible broad and 



low P. fascicularis. 



e. Hands gray, yellow speckled ; color ochra- 



ceous buff; ascending ramus of man- 

 dible narrow and high P. mandibularis. 



f. Hands and feet gray, color yellowish 



brown ; skull and teeth large P. capitalis. 



g. Hands grayish cream; color wood brown 



tinged with red P. Iceius. 



h. Hands gray and cream buff; color tawny 



and black P. lingungensis. 



i. Hands bluish gray and cream buff ; color 



tawny ochraceous and brownish black P. lautensis. 



j. Hands pale gray and cream buff; color 



blackish brown and ochraceous P. sirhassenensis. 



k. Hands yellowish gray; color wood brown 



banded with black and yellow P. vitiis. 



