92 LEPIDOPTERA. 



brown ; cilia white. Female decidedly larger, with broader 

 fore wings rather darker in colour ; hind wings dark smoky- 

 brown with the base paler ; body shorter and thicker. 



Underside of the fore wings smoky grey-brown ; discal 

 cell full of long, prostrate, dusky hair-scales ; base of the 

 dorsal margin pearly- white. Hind wings white, dusted along 

 the costa with pale brown ; nervures similar ; central spot 

 smoky-brown. Body and leg-tufts brownish-white ; legs 

 grey-white. 



Variable in size and also in the depth and degree of dark 

 shading upon the fore wings, which becomes in the west of 

 Ireland and in Scotland rather of a blackish-grey. 



On the wing in June and July. 



Larva moderately stout, tapering but little at either end, 

 except the last segment, which is rather elongated and slopes 

 off at an obtuse angle; head dull black; a dull blackish- 

 brown plate on the second segment having three small spots 

 of the ground colour on its front edge ; general colour bright 

 ochreous-yellow, with an elaborate blackish-brown raised and 

 granulated arabesque pattern of curves and angles on the 

 back, the sides equally intricate, but linear and wavy in 

 character; dorsal stripe represented by double triangular 

 spaces of the ground colour at the segmental divisions, 

 and on the last segment as a central stripe ; subdorsal 

 lines indicated by very thin undulated lines of the 

 ground colour, and on the anal segment abruptly widening 

 into a broad stripe tapering to a point at the extremity ; 

 raised spots and spiracles black, as also are the legs and 

 prolegs, the latter having a ring of white above their 

 extremities. 



Or, ground colour brilliant orange-ochreous, visible in 

 spots at the segmental divisions along the middle of the back 

 and in narrow streaks along the subdorsal region, a much 

 interrupted line along the spiracles, and a row of spots and 

 blotches on the side just above the legs, the largest above the 



