2l8 • LEPIDOPTERA. 



them a pale oclireous line, and a broader ochreous stripe 

 below them ; under surface very pale greenish ; head pale 

 brown, bristly. (Fenn.) 



Mr. Buckler describes the young larva as " stout in front, 

 with the head large and rounded, and tapering to the tail ; 

 greyish, with reddish-brown dorsal, sub-dorsal, lateral and 

 spiracular lines, the lateral lines being broader than the rest ; 

 the spiracles black, with another brown line below them ; the 

 skin covered, though not very closely, with short, stout, 

 curved, pellucid bristles." " It hybernates when very small — 

 one-sixth of an inch long — creeping down the blades of grass 

 and hiding in the thickest parts of the tufts. Soon after 

 commencing to eat in the spring, it assumes a greenish tint, 

 but after a moult the grey colour returns." "Throughout its 

 whole larval life very quiet and even sluggish." 



On various grasses, feeding in confinement on Aira 'praxoj', 

 A. acspitosa, Poa annua, Ar/rostis canina, &c. September and 

 October, and after hybernation, from March to June. Very 

 slow in its growth. Feeds usually at night. 



Pupa nearly five-eighths of an inch in length ; the wing- 

 cases long ; abdomen plump, thickest in the middle, taj)ering 

 to the tail, and ending in a blunt flat spike ; back of thorax 

 rounded ; head and eye-sheaths pi'ominent. At first the 

 head, thorax, and wing-covers are semi-transparent, and of a 

 pinkish grey tint ; abdomen ochreous, with dark dorsal stripe, 

 and other lines and spiracles black ; after about three weeks 

 the eyes become black ; and the thorax, antenna-cases, and 

 wing-covers of an opaque cream-colour, finally changing to a 

 dingy, dark purplish brown. (Buckler.) Placed head upwards 

 close to the ground, among the thick tufts of grass, and 

 apparently unattached. Remains in the pupa state nearly a 

 month. 



A species of northern and somewhat local distribution 

 frequenting mountainous and hilly regions, yet not found on 



