158 



U.S. NATIONAL MUSEUM BULLETIN 275 



d 



? 



3.0 



32 



3.4 



3.6 



3.8 



4.0 



4.2 



Figure 32. — Statistical comparison of breadth of rostrum of the species of Meriones: 

 A, M. caudalus; B, M. crassus; C, M. libycus. 



o 



Figure 33. — Statistical comparison of length of palate of the species of Meriones. Notation 

 remains the same as in figure 32. 



