Moths. 79 



witli silk-like threads, and so forming a case in which it 

 turns to the chrysalis. It is found very nearly all the 

 year round, but is met with in greatest numbers during 

 the spring months. 



PLUSIA TRIPARTITA (Hufn.) URTICiE (Hiibn). 



Known in England as the Spectacle Moth. It is met 

 with in the day-time as well as at dusk, like many 

 others of the genus Plusia. Its fore-wings are dark 

 grey, varied with greenish- white in the basal and mar- 

 ginal areas ; the sub-terminal line is marked below the 

 costa with black arrow-heads in front, and is bordered 

 with deep black behind. It is common in the greater 

 part of Europe and Northern Asia. The larva, which 

 is greenish brown, has two white lines on the back, and 

 slender white and green lines along each side above the 

 feet. It feeds on nettle. 



PLUSIA CIRCUMFLEXA. 



Similar somewhat to the English Gamma, or silver Y 

 moth, but a distinct variety, and found largely in Europe. 



