266 LEPIDOPTERA. 



black ; body delicate apple-gi'een, with a moderately wide 

 darker green dorsal stripe, bordered on both sides by a 

 narrow paler stripe ; spiracular line dark green, broader and 

 less clearly defined, bordered below by a narrow but distinct 

 bright yellow-green stripe ; spiracles brown, each with a 

 faint paler line pointing forwards ; subdorsal line dark green 

 above, yellow green below; anal points pink, legs tinged 

 with pink ; prolegs green. 



On common grasses — Nardus stricta, Cynosurus cristatus, 

 &c. Probably in every month of the year. From eggs laid 

 in May or June the larvaj hatch in a fortnight, and are full 

 fed in about a month, excej)t that some grow more slowly, 

 hybernate and feed up in the spring. No observation seems 

 to have been recorded of the larvae resulting from eggs laid 

 by the August brood of butterflies, but, judging from analogy, 

 they doubtless hybernate while very small, and also feed up 

 in the spring and early summer, thereby causing the long 

 succession of emergences of the perfect insect. 



Pupa smooth and plump, very slightly ridged or keeled 

 on the back of the thorax ; the superior margins of the wing- 

 cases project on each side as a rather sharp ridge ; head 

 rather squared ; back of the abdomen bent round in a curve 

 to the anal point. Colour delicate pale green with a faintly 

 darker green dorsal stripe ; edge of the projecting wing- 

 cases on each side whitish, outlined with a reddish brown 

 streak ; abdomen delicately freckled with paler green ; wing- 

 cases faintly marked with darker green nervures, anal tip 

 with a short brownish red streak on each side. (Buckler.) 

 Suspended by the tail to a blade of grass, or other plant. 



One of the most universally common of butterflies, occur- 

 ring almost everywhere in grassy places, and even inhabiting 

 the higher portions of the mountains, where, 2000 feet above 

 the sea, it shares with C. Damis and Erebia Cassiope the 

 honour of being the only resident butterflies. Not very 

 lively but flying just over the tops of the grass or sitting 



