384 LEPIDOPTERA. 



similar places in that district. Colonel Partridge has found 

 it at Dolgelly ; and there is a record of its capture in Anglesea. 

 Outside this particular district of mountain limestone it does 

 not seem to have been observed. It was first taken in the 

 year 1853 at Llangollen, by Mr. Joseph Ashworth, and was 

 recorded and described in the Zoologist, 1855, by Mr. H. 

 Doubleday, who named it after its discoverer. lie, however, 

 very judiciously remarked that it is closely allied to A. decora. 

 In 18G2 Dr. Herrich-Schiiffer in the conrse of some remarks, 

 in the same magazine, upon British insects, compared it in 

 some respects to a much larger species — A. candelisequa 

 (candelarum) — and, presumably for this reason, the sugges- 

 tion has since been repeatedly made that it might be a local 

 variety of A. randrlisequa, Hilb., a species widely distributed 

 in central and eastern Europe. For this I can see no grounds. 

 The two species bear no resemblance to each other ; they 

 differ in size, colour, markings (so far as A. candcliscq2ta can 

 be said to have markings), and in shape, and are, in fact, not 

 closely allied. But A. decora is unquestionably very nearly 

 related to^. Ashivorthii ; and in all probability vl. Simplonia, 

 an inhabitant of some of the higher portions of the Alps and 

 Pyrenees, is identical with it, if indeed both are not local 

 forms of A. decora. If these forms are distinct species our 

 insect is, to all appearance, exclusively confined to its moun- 

 tainous haunt in North Wales. 



21. A. ravida. Rid). ; obscura, Stmul. Cat. Expanse, 

 to 1| inch. Fore wings broad behind, glossy grey-brown, 

 with a broadly reddish tinge along the costal region ; mark- 

 ings very obscure ; hind wings greyish-white. 



Antenna; of the male threadlike, very faintly ciliated, 

 reddish-brown. Palpi and head densely tufted with rich purple- 

 brown scales. Collar similar, thickly scaled, erect ; shoulder 

 lappets long and loose, purple-brown; back of thorax 

 browner, more thinly scaled, and with the scales very pros- 

 trate, except a small divided back crest ; fascicles smoky- 



