SPALAX 891 



nearly twice length excluding condyles, width along anterior 

 suture about two-thirds median length ; surface of basioccipital 

 irregularly depressed at side; auditory bulla? rather large, but 

 displaced upwai'd so that lower Ijorder is about on level with 

 that of foramen magnum, their outline somewhat flask-shaped, 

 the neck of the flask projecting horizontally outward, not 

 abruptly defined from body of bulla ; surface of bulla smoothly 



Fig. 182. 

 Spalax dolbrogese. Nat. size. 



polished. Interorbital region deeply constricted, its upper 

 surface marked by a narrow median groove extending forward 

 from sagittal crest. Zygoma slender and weak, not expanded at 

 middle, nearly horizontal throughout, bowed gradually outward, 

 so that the greatest zj^gomatic breadth is at level of anterior 

 extremity of glenoid surface ; infraorbital foramen large, broadly 

 crescentic in outline, its greatest width scarcely or not more 



