PTEROPHORUS HIERACIT. 357 



the shoot, but eats the young and full-grown leaves 

 indifferently. Its principal object is, evidently, shelter 

 from the sun, and it is so sluggish that it can hardly 

 ever be seen to move when light is upon it. It is 

 liable to a queer disease, which causes it to become 

 distended, and die in the form of a little hairy bladder. 

 Great numbers die in this way, and from some of them 

 ichneumons emerge, but I think by no means from 

 all. 



The pupa-state seems to be assumed under any 

 convenient object close to the ground, as the hairy 

 pupa is not often to be found on the plants. 



I have made these notes upon the larva of P. 

 teucrii because its peculiar habits interested me ; but 

 the merit of its discovery, in the first instance, belongs 

 to Mr. N. Greening, of Warrington, who has already 

 (E.M.M., Vol. IV, pp. 16 and 39) given a description 

 (under the name of P. hieracii) differing very slightly 

 from my own. (Charles G. Barrett, 11th October, 

 1871 ; E.M.M., December, 1871, VIII, 155.) 



Pterophorus ph^eodactylus. 



Plate OLXIII, fig. 8. 



The larva is seven lines in length, moderately stout, 

 tapering towards the anal extremity. The head is 

 smaller than the second segment, whitish, tinged with 

 green; the crown, sides, and spot on each cheek are 

 shining black; the mandibles are blackish-brown. 

 The ground colour is green, the segmental divisions 

 paler, the dorsal line bluish-green. The tubercles, in 

 four dorsal rows (four on each segment), black, each 

 with a moderately long grey hair, and a tuft of shorter 

 whitish bristles ; the inner rows of warts are situate 

 towards the anterior, and those forming the outer 

 rows towards the posterior edges of the segments; 

 subdorsal, a black wart on each segment, with a 

 moderately long grey hair, and a tuft of short white 



