94 



OBSERVATIONS ON THE RODENTIA. 





Molares ^, 



Section I. — Murina. 

 Family I. — Sciurid^e 

 Dentition. — Incisors laterally compressed 

 rarely -JJ, equal in size or nearly so, excepting the anterior 

 molar of the upper jaw (where there are are -|4)> which is 

 smaller than the rest. The series of molars on the opposite 



side of each jaw are widely separated, and parallel. 



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(a), upper side. (6), under side (c), side view, showing the position of the ant-orbital 



foramen, &c. (d), lower jaw, viewed from beneath. (e), one of the rami of the lower jaw, 

 inner side. 



Skull. — Ant-orbital foramen very small, situated near the 

 plane of the palate, and about midway between the line of the 

 front molar and the intermaxillary suture. This foramen has 

 its anterior outlet bounded externally by a bony protuberance, 



Skull of Sciurus vulgaris. 



