TOR TRICIDjE—LE P TO CRA MM A . 219 



brood to lay eggs — whicli looked like spots of dirt or green 

 glue-like patches — in a bottle, and from these reared the 

 second brood, and thus set the question at rest. It is singu- 

 lar that the grey second generation is always very much the 

 more common. It conceals itself cleverly by sitting on the 

 elm twigs with its wings wrapped round the bark, and from 

 its colour is wonderfully protected. A rather local species ; 

 former!}' common near London, and still to be found in Kent, 

 Surrey, Hants — both Isle of Wight and the New Forest — 

 Dorset, Devon, Cornwall, Somerset, Essex, Gloucestershire, 

 Herefordshire, Worcestershire, Cambridgeshire and York- 

 shire. This, I think, is the extent of its range in these 

 Islands. Abroad it has a wide distribution through Central 

 and Southern Europe, the Scandinavian Peninsula, Asia 

 Minor, Japan, and in North America, New York State, 

 Pennsylvania and Virginia. 



3. L. niveana, Fnh. ; treveriana, ScMff; scotana, 



Gn. — Expanse f to | inch (18-22 mm.). Fore wings 

 shining bluish-white with a flattened triangle of three 

 brown spots towards the middle of the costa, and before 

 this another brownish costal spot ; hind wings smoky white. 



Antennfe pale brown, dusted with white ; palpi, head, and 

 thorax greyish-white ; abdomen pale grey-brown. Fore 

 wings much arched at the base of the costa, also expanded 

 and the edge roughened ; apex squared ; surface rough with 

 a few raised tufts placed in lines ; clear bluish-white faintly 

 dusted with black atoms and flecked with small grey-brown 

 clouds which seem to suggest basal first and second lines, 

 yet only in a fragmentary manner ; usually there are two 

 rather obscure brown spots on the middle of the costa and 

 another below them, so as to form a flattened triangle, before 

 which is a fainter costal spot ; hind margin dusted with 

 brown ; cilia white. Hind wings smoky white ; cilia white. 

 Female similar. 



Underside of the fore wings shining lead-colonr ; costa 



