16 COLIAS HTALE. 



COLIAS HTALE. 



(One of the few larvae of which there is no figure in 



this volume.) 



One egg, which had been laid loose, I received Sep- 

 tember 8th, 1875, from Mr. E. F. Bisshopp. It was 

 apparently smooth, but really ribbed and of a pale 

 canary-yellow colour, reminding one of a canary- seed 

 in miniature. This egg proved infertile and shrivelled 

 within twelve days. 



Six more eggs were sent me by Mr. Harwood, of 

 Colchester, on the 16th of September, 1875 ; they 

 were laid on a spray of Medicago sativa ; they were in 

 shape and colour as above mentioned, with longitudinal 

 ribs ; they began to turn pinkish on the 20th, and 

 three of them scarlet on the 21st, and dark grey a few 

 hours before hatching on the morning of the 22nd. 



The young larva was of an ochreous greenish colour, 

 with the rough head purplish brown, nearly black ; 

 there was a faintly dark greenish sub-dorsal stripe on 

 either side of the back. 



They fed on the cuticle of the upper side of the 

 leaves of lucern, forming small transparent blotches, 

 and it was noticeable that each larva remained on the 

 identical leaf where it was first placed, and each time 

 fresh food was given they had to be removed to it. 

 On the 4th of October they moulted the first time. 



On the 12th of October they had grown but little, 

 and were little more than one- eighth of an inch long, 

 of a dingy green colour, with a slightly paler greenish 

 sub-dorsal line and a faintly darker dorsal line, the 

 spiracular stripe of a paler greenish than the ground 

 colour, the entire surface sprinkled over with fine 

 bristly blackish hairs, the head rounded and bristly. 

 At this time they ate little holes through the leaves 

 between the veins. 



By the 21st of October all three had got over their 

 second moult, and were of a darker full green than 



