1896.] MAMMALS OF NTASAIANJ). 789 



2. Cbrcopithecus lbuoampyx, Fisch. 



{C.pluto, Scl. p. Z. S. 1892, p. 97 ; C. leucamij^jx, Scl. P. Z. S. 

 1893, p. 253.) 



3. Cekcopithecus moionbxi, Scl. 

 (Scl. P. Z. S. 1893, p. 252.) 



4. Ceecopitheous albiguiaris, Sykes. 



(P. Z. S. 1894 ', p. 137.) 



Three specimens from the Chiradzulu Mts., July 1895 

 {A. Whyte). 



5. Papio pkuinosus, sp. n. (Plate XXXVIII.) 



a. Ad. skin, S ■ Port Johnston, July 24, 1895 {Dr. P. Bendall). 



" Irides yellowish brown. Native name ' Nyani.' " — P. B. 



Size and length of fur very much as in P. tliotli, Og., to which 

 the species seems to be most nearly allied, but the hairs are softer 

 to the touch, entirely different in colour, and unannulated 

 throughout. General colour hoary grey, not very unlike that of 

 such specimens of Didelphys marsupiaUs as have white-tipped 

 bristle-hairs. Throughout, on the upper surface, there are two 

 sorts of hairs, the shorter about 3-4 inches in length, and the 

 longer about 7 inches ; both have black tips about | to 1 inch 

 long, while their remainder is dirty white. In a general view the 

 black tips of the shorter hairs show clearly against their white 

 bases, but those of the longer hairs do not show at all, so that 

 these latter look wholly white. The general hoary colour 

 obtained by this mixture of black and white extends all over the 

 upper surface, including the head, along the outer sides of the 

 limbs to the melapodials, and to the end of the tail, which is, 

 however, rather blacker proximally and whiter terminally than the 

 rest of the body. Tip of tail untufted. Below, on cheeks, chin, 

 and belly, and on the inner sides of the limbs the black tips 

 disappear, the fur is then entirely dirty white. The fingers and 

 toes are also nearly unmixed white. 



Skull very closely resembling that of P. tJioth in size and 

 general characters, but the muzzle is very decidedly shorter. 

 Thus, while the distance from the orbit to the occiput is almost 

 identical in the two, that from the orbit to the gnathion is very 

 materially shorter in the new form. The muzzle is also more 

 tapering aud less parallel-sided anteriorly. The nasals are less 

 flattened, and are more clearly visible in a lateral view of the 

 skull. Below, the palate is shorter, the tooth-rows are more 

 bowed in anteriorly, and the pterygoid fossae are broader. 



In the lower jaw the pit below p.^&m.' is very much shallower, 

 indeed scarcely noticeable, and the chin is much more developed, 

 probably because of the shortening of the palate and consequent 

 vertical position of the lower incisors and canines. 



' These references refer to the three previous papers in the P. Z. S,, in 1892, 

 1893, and 1894. 



