206 PROCEEDINGS OF THE 



Found during August and September, rolled up on the under 

 surface of the leaves of Pynis aucuparia. 



Vitellinae. — Head white, with a fuscous cloud on the vertex, 

 not touching the eye spots, which are black ; the lower part of 

 clypeus black in the centre. The body is light green, with the 

 folds of the skin whitish; along each side of the dorsal vessel 

 is a row of Vv'hite tubercles, and another row is over the legs. 

 The dorsal vessel is pale green. The spiracles dark reddish, and 

 above each is one or more small red marks. Legs clear white, 

 claws blackish. The anal segment bears no tubercles. 



The above description is from some larvae taken in July at 

 Eannoch. Brischke bred the species from two different larvae. 

 The one was found on Salix caprea, in August and September. 

 It was clear yellowish-green, with numerous white tubercles ; the 

 head shining, granular, yellowish, and black eye spots. The 

 spiracles eliptical, reddish; the claws brown. The other larva 

 was found in July, on Salix viminalis and ^S'. caprea. It was 

 smaller than the autumnal form, the ground colour was bluish- 

 green, the dorsal line (which was free from the white warts) was 

 of a darker green, and the whole body (except the last segment) 

 was beset with raised, often confluent, tubercles and dots. The 

 spiracles were reddish-brown, and over each (except the first and 

 last) stood a small dot of the same colour, which was not present 

 with the other larva. The claws are brown, and upon the yellow 

 shining head is, between the eyes, a brownish spot. 



LiLConim. — Head light brownish-yellow, the mouth part brown- 

 ish, eye spots black. Across the vertex is a large dark brownish 

 mark, occupying the greater part of the vertex, and extending 

 down to the front of the head. The legs are white, the claws 

 black, the clasps light glassy-green. The eliptical spiracles are 

 dark brownish-black. The body is bright, rarely bluish, green, 

 the skin wrinkled and beset with white tubercles over the lees 

 and along the back, in the former part consisting of a large with 

 a smaller one beneath it ; they are absent from the anal segment. 

 There can scarcely be said to be a dorsal stripe, but when the 

 food canal is filled, it is noticable as a slightly darker green line 

 enclosed by the white dorsal tubercles. 



AYhcn young the body is greyish- white, tlie head blackish, and 

 obscured by a whitish exudation ; the body is dusted all over with 

 a white powder, which varies in quantity. 



