new Mammals from Dutch JSew Guinea. 387 



Uromys stalkeri calidior, siibsp. n. 



Similar to true stalkeri of Eastern New Guinea in all 

 esf^ential characters, but fur crisper and colour darker, warmer, 

 and more heavily licked with black. Sides of belly edged 

 with biiffy. 



p'ur crisp, decidedly crisper than in the soft -haired stalkeri; 

 hairs of back about 9 mm. in length. General colour above 

 nearest to " cinnamon," that of stalkeri more approaching 

 " clay-colour," the back heavily lined, owing to the black 

 tips to the hairs. In stalkeri the colour is almost uniform, 

 hardly any of the hairs having black tips. Under surface 

 white, the white area broader than in stalkeri, the hairs 

 normally white to their bases. Lower edge of flanks with a 

 more or less distinct buffy or oclnaceous-buff line, contrasting 

 with the white ol' the belly, but in some specimens the huffy 

 passes right across the belly, and in these the bases of the 

 ventral hairs are commonly slaty. Head grey, darker than 

 in stalkeri. Hands whitish generally, with a darker meta- 

 carpal patch ; feet dull whitish brown. Tail wholly black. 



Skull apparently as in stalkeri, except that the nasals pro- 

 ject backwards slightly beyond the })remaxillary process. 



Dimensions of tlie type (measured in flesh) : — 



Head and body 153 mm. ; tail 156 ; hind foot 30; ear 17. 



Skull : greatest length 33*8 ; condylo-iiicisive length 33'-4 ; 

 zygomatic breadth 17"7 ; nasals 11 ; interorbital breadth Q"2 ; 

 palatilar length 16'2 ; palatal foramina -I'S ; uj^per molar 

 series 6*5. 



Hab. Coast area of Dutch New Guinea, south of the Charles 

 Louis Range. Type from the Mimika Kiver. Alt. 420'. 

 Others from the Wataikwa Kiver. 



Tt/pe. Old male. Original number 3013. Collected 

 30ih AJarch, 1910, by G. C. Shortridge, on the B.O.U. New 

 Guinea Expedition. Nine adults and Ave young examined. 



This small Uromys is very closely allied to the Eastern 

 U. stalkeri, but appears to be separable by the colour- 

 characters above described. Some of the specimens are in 

 a grey phase (approaching "smoke-grey"), but these are 

 apparently immature. 



It is smaller than Dr. Jentink's leucogaster and larger than 

 the same author's sexplicatus. Its wholly black tail forms a 

 ready means of distinguishing it from lorenfzii and naso. 



