226 



The Biological Society of Washington. 



Virt'olaiiius vertiealis oii 



viridieeps 3() 



Vulpes devius 25 



w 



Waito, M. B. Exliiliition of an iiinilo 

 haviiiff a peculiar frost injury . vii 



Warren, E. R. A new chipmunk from 

 Colorado Kiri-loO 



Webster, F. M. Investigations of 

 Toxnptera graminiiin ami its par- 

 asites vii 



A painful skin disease caused 



by a predaceous and supposedly 

 beneficial mite x 



Wilcox, T. E. On a letter from Col. 

 T. E. Gaillard, lu'ging a biological 

 survey of tlie Istlimusof Panama . viii 



On the early appearance of 



hepaticas and the skunk cabbage . viii 



Wilsonia pusilla otl 



X 



Xiphorliynclius insolitus 73 



rostratus 73 



yucatanensis 73 



z 



ZiMiometra 176 



Zenometrinee 176 



