138 The Scottish Naturalist. 



HAMELLUS Thnb— F.-w. (with tip slightly produced) slightly 

 glossy, greyish-brown. Central white streak broad, acuminated 

 at the apex, but not reaching the hind line, and with a tooth 

 below in the middle. Hind line dull silvery, edged inwardly 

 with brown ; between it and the tip of the wing is a triangular 

 white spot. Marginal spots somewhat elongated. H.-w. grey. 

 11 Z. 



July. In Europe as far north as Sweden and Finland ; in Britain as far as 

 Lancashire. 



PASCTJELLTTS L.— Palpi above, and centre of head and 

 thorax, white. F.-w. glossy, brownish-ochreous, white on the 

 inner-margin. Central streak broad, pearly-white, situated near 

 the costa (especially at the base), acuminated, not toothed ; be- 

 tween it and the hind line is a white spot. Hind line silvery, 

 edged with brown ; before it, on the costa, is a white spot, and 

 between it and the tip of the wing another white spot. Mar- 

 ginal spots somewhat elongated. H.-w. greyish-white, darker 

 towards the apex. 10^-11^2 L- 



June, July. North and Temperate Europe. In Britain as far north as In- 

 verness-shire ; rather local in Scotland, frequenting damp meadows and moors. 



Zeller mentions a variety from Saxony and Brunswick, which has the palpi, 

 head, thorax, and anterior wings yellowish-brown, the central streak and spots 

 concolorous, and hind wings grey. 



[Extinctellus Z. Can aberration of pascuellus, according to Staudinger), is 

 greyish-golden, costa grey, white streak obsolete, and the white spot before the 

 silvery hind line (which is obsolete_) not conspicuous ; hind wings grey. It 

 occurs in Iceland.] 



SILVELLUS Hb., adipellus Tr. — F.-w. (with tip scarcely pro- 

 duced) glossy, ochreous-brown, paler on the inner-margin. 

 Central streak broad, pearly-white, distant from the costa, rather 

 blunt at the apex, and not toothed ; from its apex a white spot 

 runs to the hind-margin. Hind line dull silvery, margined with 

 yellowish-brown. H.-w. pale grey. 11Z. 



June. Central and Northern Europe. Local in Britain, occurring only in 

 the south of England and Ireland. 



ERICELLUS H.— Palpi brown. F.-w. (with tip obsoletely 

 produced) glossy, yellowish-fuscous, paler on the inner-mar- 

 gin. Central streak pearly-white, narrow, distant from the 

 costa, acute at the apex, not toothed ; between it and the hind 

 line is an oblong white spot. Hind line dull silvery ; between 



