﻿Of this family we have aheady figured the other two genera, 

 Livia (pi. 4-92) and Psylla (pi. 565), which Livilla connects, 

 its coriaceous elytra and stoutish legs agreeing with the former, 

 but making a nearer approach to the latter in the form of the 

 head and proportions of the antenna\ 



For specimens of this new and curious little insect I am in- 

 debted to Mr. Dale, by whom they were discovered upon Furze- 

 bushes and grass the 28th June in Mr. Webb's plantation, 

 Annis, West Camel, Somerset, and the following day in plenty 

 on Iligham Hill, near Breach Wood, Langport, in the same 

 county. This insect has the power of jumping like the rest of 

 the family, and I have observed that the Psyllae expand their 

 winjjs on such occasions. 



The Plant is Avcna {Trisetum Vers.) pubescenSf Downy Oat. 



