XE 1 1 ' PJIILII'PIXE MA MMA LS—ME. 1 RXS. 



External measure me) it a of the f;ipe. 



453 



Measurement (taken from fresh specimen). 



Total length 



Tail vertebrae 



Tail to end of hairs 



Hind foot 



Head 



Ear above crown . . 

 Ear above notch . . 

 Diameter of eye . . . 



N ). 125228, 



U.S.N.M., 



type. 



150 



15;^ 

 30 

 40 

 15 

 21 



TARSOMYS, new genus. 

 TUBERCULATE-SOLED RATS. 



Type. — Tarsomys ((poensis new species. 



Characters. — Related to J/?/,*?, Ajpoinys^ and Batomys. General 

 external appetiranee similar to Sigrnodon. Pelage long and rather 

 coarse, but not spin}^ with hair of two lengths, the overhair being 

 about twice the length of the ordinar}- coat. P^ar rather promi- 

 nent, its height from crown nearl}' one-third the length of head; skin 

 of ear roughened and coated on ])oth surfaces with short, thick hairs. 

 Whiskers long, surpassing the ears. E3'es of medium size. Feet 

 naked below; fore feet 5-tuberculate; hind feet G-tuberculate, those at 

 base of inner and outer digits 2-lobed, and with several small additional 

 tubercles. Tail hairy. Skull and teeth resembling those of Butoiiiys 

 Thomas, l)ut relatively broader, with a more inflated l)raincase, and 

 large vacuities above the auditory meatus. The lateral teeth are 

 extremely oblique in their position, the upper being rotated outward 

 and the lower correspondingl}' rotated inward. The anterior upper 

 molar resembles that of Mu^^ ditlering in that the anterior series com- 

 prises but two cusps, a small inner and a large outer one. 



I 



TARSOMYS APOENSIS, new species. 

 APO TUBER(TT LATE-SOLED RAT. 



Type. — Adult male (skull, with remainder in alcohol). Cat. No. 125280, 

 LT.S.N.jM. C'ollected on Mount Apo at 6,750 feet altitude, southern 

 Mindanao, Philippine Islands, July 5, lOOi, by Edgar A. Mearns. 

 (Original number, 5706.) 



Characters.- — Pelage coarse, longest on the rump, where the hairs of 

 the general coat measure 20 nmi. in length, the stitf black overhairs 

 measuring 40 mm. The shorter hairs are tipped with 3^ellowish brown, 

 slightly grizzled. Palms and .soles naked, but with a hairy tuft on 

 inner side at base of heel and a few long hairs at outer border of 

 wrist. The toes are tufted at base of claws, the hairs extending 3 mm. 



