SPALAX 891 



nearly twice length excluding condyles, width along anterior 

 suture about two-thirds median length ; surface of basioccipital 

 irregularly depressed at side; auditory bullse rather large, but 

 displaced upward so that lower border 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 



Fid. 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 zygomatic breadth is at level of anterior 

 extremity of glenoid surface ; infraorbital foramen large, broadly 

 crescentic in outline, its greatest width scarcely or not more 



