12 ZOOLOGICAL RESEARCHES 



are blact , but the region between the eye and ear is whitish. 

 The tail is dark rufous. The skull is quite young , the 

 milk-teeth being still in place , and the first raolar the 

 only permanent tooth up. 



Description of C. stampjiii : it belongs to Schlegel's section 

 B (Simiae , p. 88) »base du triangle') forme par le champ 

 nasal revêtu de poils blancs, tournee vers le bas, tandis 

 que son angle oppose se prolonge vers le haut en pointe 

 jusque sur I'entredeux du bord inférieur des orbites". 



Hairs of fore-head , cheeks , back , sides of back and 

 basal half of tail of a more or less rufous-green tinge, 

 each hair ringed with black and rufous-yellow : crown of 

 head , nape of neck , legs and terminal half of tail black ; 

 a ditto colored patch on the middle of the lower lip : chin , 

 breast, fore-raost part of belly and upperpart of inside of 

 fore-legs white. 



It differs at first sight from C. nictitans by having white 

 colored underparts, meanwhile C. melanogeny s diSers from 

 C. nictitans and C. stampflii by having the lower cheeks 

 black and the region between eye and ear whitish. 



Length of the type-specimen, an adult male: head and 

 body 638 mM., tail 980 mM., hind foot 160 mM. 



The skeleton presents 7 cervicales, 12 costales, 7 lum- 

 bares , 3 sacrales and 33 caudales. 



10. Cercopithecus diana, Erxleben. 



Bavia (Büttikofer and Sala) ; Sofore-place (Büttikofer and 

 Sala) ; Grand Cape Mount (Büttikofer) ; Junk River (Stampfli) ; 

 Du Queah R. (Büttikofer). 



Iris light brown. 



Nicht so geraein wie die beiden vorigen, auch nicht in 

 so grossen Trupps beisammen. Bei den hiesigen (Buluma, 



1) The white figure on the nose in this section hardly can be said to have 

 the form of a „triangle". I think it better to call it a «square", meanwhile 

 it remembers a „triangle" in Schlegel's section A, 1. c. p. 86. 



Notes from the Leyden IMuseum, "Vol. X. 



