i68 LEPIDOPTERA. 



to another bush when disturbed, but the female is very 

 sluggish, readily drops to the ground, and cannot be induced 

 then to fly. At sunset the male flies about the same 

 plants on the heaths in a liveh- manner, though not with the 

 energj- shown by some species ; the female flies a little later 

 towards dusk, and more swiftly. Discovered on the heaths 

 near King's Lj^nn, Norfolk, by Mr, E. A. Atmore in 1880, 

 and still to be found in that district, though I do not know 

 of its occurrence in any other part of the United Kingdom. It 

 is a species only comparatively recently recognised anyvlierc, 

 having been first found by M. E. L. Ragonot, in the " Landes " 

 of France, about the year 187li. and since that time noticed 

 in Holland and North Germany. 



9. T. semialbana, Gn. — Expanse g inch (15 m.m.). Fore 

 wings pale yellow, with a brown cloud above the anal 

 angle. 



Antennas of the male yellowish-white ; palpi, head and 

 thorax pale yellow-brown ; abdomen paler brown, the anal 

 tuft nearly white. Fore wings not very broad ; costa arched, 

 its margin raised in a ridge from the base and slightly 

 folded ; colour pale yellow-brown ; the markings cloudy 

 pale chestnut ; basal blotch obscure and only visible as a 

 cloud on the dorsal half of the base ; central band also 

 obscure, oblique, rather sharply margined inwardlj-, but 

 outwardly spreading into an ill-defined cloud ; beyond it one 

 or two faint lines cross the sub-apical region ; cilia yellow- 

 brown. Hind wings white, with white cilia. Female a little 

 larger, but very similar, the fore wings without fold, the hind 

 wings faintly tinged with smoky clouding. 



Underside of the fore wings pale smoky brown ; of the 

 hind wings white. 



On the wing at the end of June and in July. 



Larva dirty grey-green, with paler raised dots ; head and 

 dorsal plate honey-brown, somewhat glassy, the former with 

 brown raised dots, the latter with a black dot in the middle 



