MAMMALS FROM NEW GUINEA 617 



28. Uromys bruijnii, Pet. 



About 20 specimens from Haveri, Ighibirei, Gerekanumu, Bara Bara, 

 Kapa Kapa, Inavvi, Hula, Moroka and Kamali. 



The extraordinary variability of this animal in size is as 

 striking in Dr. Loria's series as in those obtained by previous 

 collectors. Some of the specimens are hardly larger than mice 

 (1)0-1 00 mm.), and others are as big as fair-sized rats (150-160 

 mm.) but all the intermediate links seem to occur, nor can I 

 find any other characters by which to separate them into diffe- 

 rent species. It is possible that the name bruijnii will ultimately 

 have to give way to cervinipes, Gould's Mus cervinipes being a 

 member of this group. 



29. Uromys levipes, sp. n. 



a. b. ^. Haveri. Co-types. 



c. c^. Gerekanumu, February 1893. 



Rather smaller than in Mus raltm. General characters very 

 much as in U. bruijnii, but readily distinguishable by its slender 

 limbs, and especially its slender feet, which are in marked con- 

 trast with the broad climbing feet of the other species. General 

 colour brownish rufous, browner anteriorly, more rufous on the 

 sides and rump. Belly dull creamy white, the bases of the hairs 

 slate coloured. Upper side of hands and feet white ; sole-pads 

 high and prominent, not broad and low as in U. bruijnii; fifth 

 hind toe reaching to the middle of the basal phalanx of the fourth. 

 Tail rather shorter than the head and body, naked, finely scaled, 

 brown aiDove, lighter below. 



Skull long and rather narrow ; interorbital region broad, fiat, 

 evenly increasing in breadth posteriorly, its edges with slight 

 ridges. Palatal foramina not nearly reaching molars ; posterior 

 edge of palate level with the front of ni^. Bullae very small. 

 Molar structure as usual in Uromys. 



Dimensions of the two co-types, both males, in spirit : 



Head and body 147 and 1.^2; tail 131 and 141 ; hind-foot 

 36 and 37; ear both 19. 



Skull, basilar length 31.5, greatest breadth 19,7; interorbital 



