162 Mr. O. Thomas on new 
Teeth somewhat as in Mus, but upper molars each with an 
additional posterior lamina. 
Type C. melanurus. 
Carpomys melanurus, sp. n. 
Size and length of tail as in Mus rattus. Fur soft, thick, 
and woolly. General colour deep fulvous, coarsely lined with 
black. Ears thickly haired, black. Under surface dull 
yellowish white, the bases of the hairs slate. Metapodials 
silvery brown; digits white. Tail thickly furry like the 
body for its basal two inches; the remainder cylindrical, 
closely covered with shining black hairs some 5 to 7 millim. 
in length, entirely hiding the scales; not specially tufted at 
P Skull large and heavy, with very large molars. 
Dimensions of type (¢) :— 
Head and body 197 millim. ; tail 211; hind foot (moist- 
ened) 34°2. 
Skull: basal length 39°3; greatest breadth 25 ; interorbital 
breadth 5°8; palatal foramina 7°5; length of upper molar 
series 8°8. 
Carpomys pheurus, sp. n. 
Similar to, and of the same general colouras, C. melanurus, 
but smaller, with the ears less hairy, the tail brown instead 
of black, less thickly haired, and with the fur of the body 
not extending on to its base; chin, chest, and belly white. 
Skull smaller than that of C. melanurus, and with dispro- 
portionally smaller molars, which still, however, show the 
same essential structure. 
Dimensions of the type (¢) :— 
Head and body 195 millim. ; tail 178; hind foot (moist- 
ened) 31. 
Skull: basal length 36; greatest breadth 23 ; interorbital 
breadth 6; palatal foramina 7°6; length of upper molar 
series 6°1. 
BaATOMYS, gen. nov. 
Molar structure of Mus. Supraorbital edges not beaded. 
Tail thickly baired, as in Carpomys. Hind feet short and 
broad ; fore feet elongated. 
Batomys Grantit, sp. n. 
General appearance very like that of Carpomys melanurus, 
from which at first sight it only differs by its shorter tail and 
