338 Field Museum of Natural History — Zoology, Vol. XL 



Skulls of Skunks belonging to the genus Mephitis. 

 I. M. m. pulida;* 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. 



