S6 LEPIDOPTERA. 



equally plentifully, in the middle of August and through 

 September. 



Larva sluggish, yellowish or whitish green with hardly 

 visible raised dots ; head shining dark brown; dorsal plate 

 like the body but somewhat dotted. 



April and May, in the still unopened leaf-buds of sallow 

 {Scdix aurcci^ S. caprca, S. arbuscula) (Treitschke) ; second 

 generation in July, said by Hoffmann to feed sometimes on 



Gcntiana pneumonanthe. 



Pupa slender, light brown, in a cocoon under moss, on the 

 ground. 



There is some doubt about this species. It was long con- 

 sidered to be a mere varietur of the last, and for this there 

 was strong reason, since the markings of the moths are 

 nearly identical. Yet the narrower fore wings, and the 

 presence, often, of silvery lines upon them, as well as the 

 existence of a well developed second generation in the season, 

 present difficulties which it is not easy to surmount. It is 

 apparently confined to the north, and I have no personal 

 knowledge of its habits, but it is found on the hills of 

 Durham, and in Scotland in Perthshire and the Clyde 

 district, and also in the Orkneys. Its range abroad is much 

 confused with that of the preceding species, but it is dis- 

 tinctly pointed out as douhle-hroodcd in Alpine regions. 



6. S. nigromaculana, Haw. — Expanse | to | inch (15- 

 19 mm.). Head white; fore wings white with two black 

 dorsal streaked spots, one brown apical cloud and some black 

 costal dots. 



Antennae whitish brown ; palpi, head, and back of the 

 shoulder-lappets snow-white ; rest of thorax black ; abdomen 

 black, ringed and tufted with white. Fore wings rather 

 broad behind, costa nearly straight, apex bluntly rounded, 



