ACrDALIID.E- ACID ALIA 25 



For information upon its habits I am much indebted to 

 Mr. 8. J. Capper, and his sons. 



It appears tirst to have been taken in these Islands in the 

 year 1855, by Richard Weaver, in North Wales, and was 

 recorded in the Eniomolixjisf s Ana vaJ for 1856 under the name 

 of Dosithfn eh}irniitn. though ^Ir. Staintoa suggested, at the 

 same time, its correct name. In the following year another 

 was recorded near Conway; another, near Bangor, in 1860; 

 and in 1862 and following years others at Penmaenmawr. 

 On the mountain last named it has been taken in many sub- 

 sequent years, and from the eggs of examples thence 

 obtained the great majority of specimens in our collections 

 have been reared ; indeed the habits of the creature are so 

 secret that if we had to depend upon captured specimens 

 it would still be, as it was for many years, a comparatively 

 rare species with us. Doubtless it flies at dusk ; but its 

 haunts are such as are best traversed by daylight, and its 

 flight has scarcely been noted. Other localities in which it 

 has been found are Llanfairfechan, I'ettws-y-coed, Dolgelly, 

 Aber and Barmouth ; and it is probably to be found on all 

 the heather-covered mountains of North Wales. I know of 

 no other locality for it in these Islands. Abroad it is found 

 in the North of France, Belgium, Switzerland, Central and 

 Southern Germany, Northern Italy, and Corsica. 



9. A. rusticata, Schiff. — Expanse J inch. ^^'iugs 

 creamy-white; fore wings clouded at the base, and banded in 

 the middle, with umbreons or black-brown ; hind wings 

 clouded and rippled with pale smoky-grey. 



Antennfe of the male small, slender, minutely ciliated, 

 whitish-brown; palpi minute, and, with the face, chocolate- 

 brown ; eyes black ; top of the head and thorax umbreous ; 

 abdomen slender, pale unibredus with the anal segment and 

 tuft white. Fore wings narrow, costa nearl\- straight to 

 beyond the middle, much arched toward the apex, which 

 also is bluntly rounded ; hind margin gently curved ; dorsal 



