TRIFID^. 33 



in Cheshire and Lancashire ; also widely distributed in the 

 Eastern Counties to Norfolk, but I can find no record of 

 its existence in the Midland or North-Eastern Counties. 

 In Cumberland it is found in one wood, and in Scotland 

 Dr. White records its occurrence in Aberdeenshire and 

 Moray only. I find no record in Wales, though it must 

 exist in the south-eastern districts ; and am not satisfied 

 that it has not any home in Ireland. Abroad its range is 

 very wide — all the temperate regions of Northern Europe, 

 Central Europe, the Northern portions of Italy and Turkey, 

 Southern Russia, Armenia, Canada, the Northern, Eastern, 

 and Central United States, Colorado, and Texas ; and in a 

 rather larger and more obscurely coloured form (cnliginosa, 

 Walk.) in Northern China and Japan. 



Genus o9. HYPPA. 



Antennas pectinated; eyes naked, having long lashes at 

 the back ; thorax rather flattened, crested at the top and 

 back ; abdomen with three to six crests, the third the largest ; 

 fore wings elongated, rather ovate ; hind wings broad ; vein 5 

 much curved, arising from considerably below the middle of 

 the cross-bar. 



We have but a single species. 



1. H. rectilinea, Usp. — Expanse 1| inch. Fore wings 

 ashy-grey ; a black streak from the base, and a broad tawny 

 central band, edged near the anal angle by a white spot ; 

 hind wings brownish-white. 



Antennae of the male pectinated with short thick curved 

 teeth, and ciliated with abundant minute bristles, light 

 brown ; palpi short, densely tufted, pale brown, shaded with 

 purple-brown, third joint minute ; head densely covered with 

 raised purple-brown and white scales, and having small tufts 

 at the bases of the antennee ; collar purplish- white, with a 

 dark purple-brown central bar ; shoulder-lappets purple- 



VOL. V. c 



