The Scottish Naturalist. 141 



June. Central and Southern Europe. The var., Southern Europe. In 

 Britain both are very rare, and have occurred only in the south. I have not seen 

 British examples. By some authors Cassentiniellus is considered distinct : I 

 follow Staudinger in uniting it to crater ellus. 



CHEYSOWUCHELLUS Sc— Head ferruginous, palpi long. 

 F.-w. whitish-ochreous brown, with fuscous scales between the 

 veins. Lines brown ; central one broad, hind one margined 

 outwardly with white ; between it and the tip is a fine brown 

 line. 10- 1 1 L. 



May, June. Central Europe. Local in Britain, occurring as far north as 

 Worcestershire. 



C. —F.-w. not emarginate nor obtuse. Tip often acum- 

 inated. Cilia variegated, rarely metallic. 



a J Cilia tesselated with whitish lines or spots. 



1. — The two lines obscure; the central widely diffuse, the 

 hind serrated and outwardly margined with whitish. The spaces between them 

 and the bases paler or whitish. 



[These two northern species might occur :— 



Truncatellus TAX., which is grey, cinnamon-coloured along the costa, and 

 ochreous on the inner-margin ; lines brown, the central thickened in the middle, 

 the hind slender, sinuate-dentate, and margined with white. Cilia shining grey, 

 rarely with white streaks. 



Maculalis TAX., (alpine as well as northern), is blackish-fuscous, with a narrow 

 white streak before, and a broader one in, the middle ; the last streak is 

 widened into a spot beyond the middle. The hind line is serrate and sinuate 

 above, and the cilia have white streaks in them.] 



2. .-1 central white streak in most of the 

 species. White spots, margined with fuscous, before the hind line. 



FALSELLTTS S.V — F.-w. whitish and ochreous, streaked 

 with fuscous ; a narrow white streak from the base scarcely 

 reaches beyond the middle, and is toothed below; from its ex- 

 tremity springs two fuscous streaks. An oblique white spot 

 precedes the angulated fuscous hind line, which is double, and 

 is indented near the inner-margin. Cilia shining grey, with a 

 few white streaks. H.-w. grey. 9-10 L. 



July, August. Central Europe. Not uncommon in England ; more local or 

 less observed in Scotland (Edinburgh, Perthshire, Aberdeenshire). 



(To be continued. J 



