338 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. XL 



Skulls of Skunks belonging to ihe genus Mephitis. 

 i. M. m. putida;* 2. M. m. avia, 3. M. mephitis; 4. M. hudsonica. 



* In M. m. putida the palatal spine is often more pronounced than is shown here. 



