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Show 118 MR. OLDFIELD THOMAS ON NEW [Feb. 18, 3. On some new Mammals from Northern Nyasaland. By OLDFIELD THOMAS, F.R.S. [Received February 4, 1902.] Since my last paper on the mammal-fauna of Nyasaland, a number of further specimens from that country have been contributed 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 G. palliatus 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. palliatus. 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 m1 or m3, while in C. palliatus it is over mx ; the distance from the same spot to the tip of the nasals is nearly half as much again in the new form (23 m m . 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 m m . Zygomatic arches strongly divergent posteriorly, nearly parallel in C. palliatus. Front edge of coronoid process of lower jaw angularly convex forwards. The other cranial differences observable seem all to be dependent on the greater size of C. sharpei. Dimensions (approximate) of a stuffed specimen, not the type:-Head and body 680 m m . ; 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 line 16, breadth 10; least interorbital breadth 10; orbit, height 26, breadth 27 ; vertical height from palate to frontal behind supraorbital ridges 38-5 ; palate length 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. Hub. Nyasa-Tanganyika Plateau. Type from Fort Hill. 1 Figured, MB. Ak. Berl. 1879, p. 832, pi. iv A. |
