238 



MR. O. THOMAS ON A NEW 



[Apr. I 7, 



nearly at right angles to the general line of the skull. Supra- 

 orbital edges square and sharp, but not beaded. Palatine foramina 

 short and narrow. Bullae small. 



Teeth. — Incisors smooth. Upper molars (fig. 2, a) very compli- 



Fig. 1. 



Skull of Chiruromys farhesi ; once and a half the natural size. 



cated, the cusps low and the laminte scarcely marked, so that the 

 homologies between their cusps and those found in other genera are 

 by no means clear. M^ with eleven cusps in all, namely three trans- 

 verse sets of three each, and two extra solitary cusps; m^"^ with 10 

 cusps ; nr' nearly as long as m\ apparently with seven cusps, but its 



