34 PLA T E LXXXV. 



The Caterpillar, from which it is produced, is of a very extraordi- 

 nary form, and has rather the appearance of a formidable or venomous 

 creature, than the larva of a Moth : it feeds on Willows and Poplars, 

 and is generally found in great plenty where thofe trees grow, in the 

 month of July. The two tails, or crimfon filaments at the extremity 

 of the body, are protruded or concealed within their bafe at the crea- 

 ture's pleafure ; when protruded they have a continual writhing or 

 vibratory motion. 



It palTes to the Pupa ftate in Auguft. 



-PLATE 



