MUS LEPTURUS. il 



long and strong. There are five toes on the hind-foot; 

 four well developed fingers on the fore-foot, with a very 

 short thumb , armed with a little claw. The two middle 

 fingers of the fore-foot are nearly of the same length. 

 Claws dirty yellow. Upper and lower molars very large 

 and strong. Distance between incisor and first lower 

 molar extraordinarily large. Upper cutting- teeth orange, 

 lower ones brighter colored. 

 One specimen. 



m. m. 



Head and body 203 



Tail 227 



Ear 17 



Hind foot 44 



Length upper molar series 10 



Distance between^ incisor and jfirst upper molar. 12 

 » » » » » lower » 7 



Hab. Sumatra, Batang Singalan (S. Muller). 



6. Mus lepturus , n. sp. 



Fur woolly and very long. Woolly hairs of upperparts 

 of head, back, sides of the body and outside of legs 

 slate-colored near the base, brown tipped. Here and there 

 longer black bristles are interspersed. The hairs of the 

 lower-parts of the cheeks, chin, breast, belly and inside 

 of legs are of a pure white. 



Tail much longer than head and body , with very scarce 

 hairs, especially near the root. End of tail with a small 

 tuft. Ears very elongate, rounded at the tip. Whiskers 

 project beyond the tips of the ears; they are dark brown 

 and bright tipped. 



Hind-foot rather long , thumb and fourth toe very short. 

 The thumb of the fore-foot is also very short, and armed 

 with a small nail: the two middle fingers of the same 

 length. 



Claws brown. Cutting-teeth bright yellow. The distance 



I<fotes from tlie Ley den JMuseura, "Vol. II. 



2 



