JSN?!.] MK. (). THOMAS ON A N KW GENUS OK MURID/E, 131 



laid forward (in spirit-specimens), they would no doubt reach to or 

 beyond the anterior canthus of the eye. Hairs of back nearly white at 

 their bases, then slate-coloured, their tips reddish, or, along the centre, 

 black. Whole of underside and inner sides of limbs pure sbar[)ly 

 defined white, the back of the lower leg, however, slatv grey. Hands 

 and feet white. Feet long and slender; fifth hind toe (without 

 claw) barely reaching to the base of the fourth ; hallux reaching 

 about to the level of the middle of the fifth. Soles quite naked, 

 smooth, the pads small, rounded, prominent, only five in number, the 

 postero-external one of the complete Murine set of six absent. Tail 

 very long, slender, finely and distinctly scaled, the scales about 12 or 

 13 to the centimetre ; its proximal hall' almost naked, with just a few 

 minute hairs between the scales ; these gradually increase in numbers, 

 the terminal half being sufficiently thiclily clothed for the scales to be 

 nearly or quite hidden ; colour of tail sharply bicolor from base to 

 .tip, above slaty grey, below white, the hairs and scales both so 

 coloured. 



Skull (Plate V. figs. l-.'>)very light, slender, and delicate, with a very 

 long narrow parallel-sided muzzle. Nasals not tapering backwards, 

 but as broad behind as in the middle, their posterior margin directly 

 transverse ; frontal process of premaxilla not reaching to the level 

 of the back of the nasals. Interorbital space broad, smooth, evenly 

 convex, its edges with a slight but distinct beading. Zygomata 

 but little expanded, very thin and weak, their two anterior" roots, 

 upper and lower, about equal both in thickness and length ; the 

 zygomata, therefore, comniencing at a much lower level than in 

 Mus, and the lower root entirely without the broad external pro- 

 jecting plate so characteristic of the typical Mures. Infraorbital 

 foramen large, open, and rounded, not at all narrowed below. 

 Palate narrow, its edges square and sharp-edged, continued behind 

 the level of the last molar for about two millimetres ; palatal fora- 

 mina short, ending some distance in front of m\ Lower jaw un- 

 usually low, light, and slender. 



Incisors orange above, yellow below, the upper ones narrow, flat 

 in front, not bevelled ; with two minute vertical grooves down the 

 face of each. Molars with their pattern as already described ; their 

 cusps very high, pointed, and sharply defined ; m' as long as ^ and 

 m^ together. 



Dimensions of the type, an adult specimen, stuffed : — 



Head and body 125 millim. ; tail 172 (extreme tip imperfect); 

 hind foot 33-8; ear (dried) 17; heel to tip of hallux 23, of fifth 

 toe 25-5 ; to front of last foot-pad 17'8 ; to point between bases of 

 third and fourth toe 26*6. 



Skull:— basal length (c.) 29*0 ; greatest breadth 16-0; nasals, 

 length 14-0, greatest breadth 4-0; interorbital breadth 6-7; inter- 

 parietal, length (c.) 4-5, breadth 9-2 ; lower anterior zygoma-root, 

 diameter 1-8; infra-orbital foramen, height 3*2, breadth (c.) I -9; 

 distance from outer corner of one foramen to that of the other D'G : 

 palate, length 18-5, breadth outside m' 8-1, inside m' 4- 1 ; diastema, 

 length 9-9 ; palatal foramina, length 52 ; length of whole upper 



