270 PEMPELIA DILUTELLA. 



•dull smoky black, but in the larger examples a 

 strong tint of olive is distinctly seen through the 

 l)lack. The head is brown, strongly freckled, and 

 marked with very dark brown. A dark smoky black 

 line, faintly edged on each side with slaty grey, forms 

 the dorsal stripe ; there are also two indistinct irre- 

 gular lines of this pale colour between the dorsal and 

 spiracular regions, and a still fainter indication of the 

 pale colour along the spiracles. In the young speci- 

 mens these pale lines are scarcely discernible, even 

 with a lens. In the young specimens the frontal 

 plate is black, but in the older ones the olive tint 

 shows through it also. The ventral surface and the 

 prolegs are uniformly dark smoky blackish olive, and 

 the anterior legs are tipped with black. 



It feeds on wild thyme. No imagos emerged from 

 my larvae ; but Mr. Fletcher fortunately bred several 

 from those he kept. (George T. Porritt, 8th August, 

 1883 ; Entom., September, 1883, XVI, 212.) 



Pempelia fusca. 



This species — Phycis carbonariella — being usually 

 very abundant on the dry heaths in this (Huddersfield) 

 district, I determined last year, if possible, to work 

 out its history. Therefore, on the 2nd of July, I 

 went up to Crosland Moor, a heath almost close to 

 the town, and, in a very short time, had netted and 

 boxed some thirty imagos, a fair proportion of which 

 were females. Several of them immediately deposited, 

 and the eggs were oval, though rather pointed at the 

 ends, the colour a bright light purple. 



On the 11th a number of them hatched, and the 

 newly emerged larvae were very lively, red with black 

 segmental divisions, and the polished head and frontal 

 plate nearly black. 



Ling, sallow, etc., were at once supplied, and they 

 soon took to the sallow, quite forsaking the ling and 



