54 COLLIX SPARSATA. 



with a very faint blue tinge ; segmental divisions 

 yellowish ; spiracles black ; ventral surface almost 

 uniformly pale green. 



Feeds on Lysimachia vulgaris. 



Before the middle of September all the larvae had 

 spun up; the cocoons were formed on the bottom of 

 the cage, and were tolerably firmly constructed of 

 silken threads. 



The pupa is polished, about three-eighths of an inch 

 long, and tolerably plump; it is of the ordinary shape, 

 thickest at the ends of the wing-cases, and tapers 

 rather suddenly to the anal tip ; eye-, antenna-, and 

 wing-cases well defined. Colour of the abdominal 

 segments rather pale brown ; head, thorax, and wing- 

 cases green. 



The first imago emerged on the 11th of June follow- 

 ing. (George T. Porritt, 4th January, 1879; Entom., 

 February, 1879, XII, 58.) 



LiOBOPHORA HEXAPTERATA. 



Plate CXXXVII, fig. 3. 



For several years I had been keeping by me a 

 description of the larva of this species, taken from 

 specimens beaten by myself, or sent to me by friends 

 at various times, but it was not until 1875 that I was 

 enabled, by the kindness of Mr. A. H. Jones, to de- 

 scribe the egg also. 



I received some eggs on the 30th of May; the larvse 

 hatched on the 1st of June, were full-grown in about 

 four weeks, and spun up during the first week of 

 July ; captured larvse usually spun up a week or so 

 later. I am convinced from experience that aspen, 

 Populus tremula, is the food, and though the larva 

 will, for a time, eat other species of poplar, it will not 

 thrive on them. 



The egg is broadly oval in outline, flattened, and 

 laid on its side; the shell shining, and covered all 





