CL0ANTHA SOLIDAGINIS. 59 



the dorsal stripe dark brown, with a distinct pale 

 bluish-grey central line, but no perceptible subdorsal 

 lines, only a broad, clear, pale yellow stripe along the 

 spiracular region, the spiracles and trapezoidal dots 

 grey, and the ventral surface, legs, and prolegs of a 

 uniform dark purplish-brown. By the middle of June 

 it was full-fed, and the adult larva may be described 

 as follows : 



Length about an inch and a half, and of average 

 bulk in proportion. Head globular, the same width 

 as the second segment. Body cylindrical, and of 

 nearly uniform width throughout, being attenuated 

 very slightly towards the head. Skin smooth and 

 soft. 



The ground-colour dark olive-brown, strongly tinged 

 with purple. Head smooth and shining, pale brown ; 

 the front of each lobe dark sienna-brown. Dorsal line 

 dull slaty-blue, edged with smoke-colour ; no percep- 

 tible subdorsal lines, but a broad, clear pale yellow 

 stripe along the region of the spiracles, edged on the 

 upper side with a very fine black line, on which the 

 reddish-brown spiracles were placed. On the front of 

 the second segment a conspicuous black mark, and 

 a transverse black mark on the hinder part of the 

 twelfth segment. Trapezoidal dots very distinct, pale 

 yellow. Ventral surface purplish-brown, tinged in 

 the centre with green, gradually becoming darker 

 towards the pale spiracular band. Legs brown and 

 shining. 



The larva, both in the adult and earlier stages, is 

 very beautiful; the single one reared went down on 

 June 19th. 



At first the larvae fed on whitethorn ; but, on being 

 supplied with bilberry, evidently preferred that plant, 

 which is, in all probability, the natural pabulum of 

 the species. (Geo. T. Porritt, 10th August, 1872; 

 E.M.M., September, 1872, IX, 92.) 



