116 LEPIDOPTERA. 



the elbowed line is faintly discernible; there are no other 

 markings. The hind-wings are silky fuscous-whitish, with a 

 barely discernible lunule. The ciHa of all the wings ochreous- 

 drab. Antennae long and setaceous. Thorax and abdomen 

 of the same colour as the fore-wings, the anal segments being 

 slightly more ochreous. 



Under-surface of fore-wings fuscous, tinged with fawni- 

 colour, and shining, more fawn-coloured along the costa; 

 beyond the middle ai"e three faint costal marks, and another 

 near the apex ; the wings are margined v/ith darker fuscous, 

 and the cilia are paler. Hind-wing shining whitish-fuscous, 

 fawn-coloured towards the costa, with a dusky lunule faintly 

 marked; at a little distance from, and parallel with, the 

 hind-margin is a dusky transverse shade. Cilia as in fore- 

 wing. Legs fawn-coloured, under-surface of thorax woolly in 

 appearance, and of a pale ochreous colour. Tongue reddish- 

 brown, split up for half its length into six, in the specimen 

 before me. Eyes dull black. 



Female similar, but broader in the fore-wings, which are 

 also more vertical at the apical margin; the antennee are 

 longer and the tip of the palpi more naked. 



The great character of helvetina would seem to be the 

 absence of any character, but the peculiar silky lustre is very 

 striking. 



Helvetina is a rare species abroad. It has occurred in 

 Germany, France, Switzerland, Piedmont and on the Alps. 



The larva is unknown. 



BiSTON LAPPONARius, Bdv. (Ent. Mo. Mag. vol. vii., 

 p. 282). 



A single example of this handsome and striking geometer 

 was captured by Mr. Warrington in Perthshire, whilst col- 

 lecting in the employ of Mr. E. G. Meek. The specimen, 



