1875.] MAMMALS FROM MADAGASCAR. 79 
smithii, but distinguished by the much shorter ear, tufts of long hairs 
on the temple, &e. 
millim, 
Length (from the tip of the nose to the root of the tail).. 152 
re Oftheitallh.; .. so 2a eee Se, wnat 149 
Hand of Chirogaleus trichotis (enlarged). 
Fig. 2. 
Foot of Chirogaleus trichotis (enlarged). 
BRACHYTARSOMYS. 
The affinities of this genus of Rats are similar to those of Nesomys, 
another rodent from Madagascar described by Prof. Peters in 1870. 
It differs, however, from the latter by its much shorter legs and by 
the configuration of the skull, which approaches that of the South- 
African Ofomys (albicauda, A. Sm.). 
Upper lip with a median groove, but not cleft. Snout rather 
short ; ears short, eye small; the hairs of the moustache in five rows. 
Fur dense, woolly. Tail long, annulated, and sparingly hairy. Four 
fingers with a rudimentary pollical tubercle; five toes, the fifth 
rather shorter than the fourth. Foot much shorter than the lower 
leg. 
Interorbital portion of the skull much contracted, without supra- 
orbital ridges. Lower portion of the foramen infraorbitale much 
narrower than the upper. The incisive apertures extend backwards 
only to the level of the front margin of the first molar. Bullze osseze 
moderately developed. Incisors not grooved. Mbolars = the an- 
