118 MR. OLDFIELD THOMAS ON NEW [Feb. 18, 



3. On some new Mammals from Northern Nyasaland. 

 By Oldfield Thomas, F.R.S. 



[Received Febraary 4, 1902.] 



Since my last papei' on the mammal-fauna of Nyasaland, a 

 number of further spechnens from that coimtiy have been con- 

 tributed to the National Museum by Mr. Alfred Sharpe, C.B., 

 Commissioner, and Col. Manning, Deputy Commissioner, collected 

 by themselves, Mr. J. McClounie, Mr. J. B. Yule, Capt, Pearce, 

 and others. 



Without occupying space by recording the known species sent, 

 the present paper, the seventh of the series, gives descriptions of 

 the new species contained in the collection. 



Opportunity has also offered for a re- examination of the 

 Nyasan Colobus, and, as it proves to be new, it is now described. 



COLOBUS SHARPEI, Sp. n. 



Coloration exactly as in C. paUiatus Peters \ to which this 

 species has hitherto been referred. Pelage rather closer and 

 longer, the hairs of the middle back 5-6 inches in length and 

 those of the mantle 10-12. 



Skull decidedly larger in every dimension than that of C. jkiIU- 

 atus. Frontal region much more convex, and also as it were 

 higher up the skull, so that the middle point between the ridges 

 is in side view over on- or m^, while in C. paUiatus it is over 

 m^ ; the distance from the same spot to the tip of the nasals is 

 nearly half as much again in the new form (23 mm. as against 16), 

 and the nasals themselves are both longer, broader, and less 

 acutely pointed behind. Zygomata stronger, the vertical height 

 of the malar just in front of the squamosal suture 10 instead 

 of about 5^ or 6 mm. Zygomatic arches strongly divergent 

 posteriorly, nearly parallel in 0. j^Jft/Zirtifws. Front edge of 

 coronoid process of low'er jaAv angularly convex forwards. The 

 other cranial differences observable seem aU to be dependent on 

 the greater size of C. shaiyei. 



Dimensions (approximate) of a stuffed specimen, not the 

 type: — Head and body 680 mm. ; tail 760; hind foot 190, 



Dimensions of the typical skull, that of an old female : — 

 Greatest length in middle line 115 mm.; condylar length, from 

 back of condyles to gnathion, 101 ; zygomatic breadth 85 ; nasal 

 opening, height 21, breadth 10 ; nasals, length in middle luie 16, 

 breadth 10; least interorbital bi-eadth 10; orbit, height 26, 

 breadth 27 ; vertical height from palate to frontal behmd supra- 

 orbital ridges 38-5 ; palate leng-th from gnathion 49-5 ; combined 

 length of upper premolars and molars 33*6, of upper molars 23, 

 of lower premolars and molars 38, of lower molars 25. 



Hah. Nyasa- Tanganyika Plateau. Typ)e ivon\ Fort Hill. 



.1 Fisured, MB. Ak. Berl. 1879, p. 832, pi. iv a. 



