specimens, and show a very considerable amount of variation, but 

 there is nothing among them calling for special comment. 



In addition to the three named forms already referred to, viz., ab. 

 sodorensium, Weir, ab. nigricata, Fuchs, and ab. conversaria, Hiib., 

 there are two other that I should mention. Curtis described under 

 the name of Aids nueraria ("Brit. Ent.," vol. vi, p. 113) an insect 

 of which he says : "yi. muraria is a new species that I found upon 

 walls in the Isle of Arran ; it is nearest allied to A. repandaria ; it 

 is, however, smaller, of an uniform grey, more speckled, and the 

 markings more obscure." At first sight this description seems to 

 apply not inaptly to the Isle of Lewis form (ab. sodorensium. Weir), 

 but that form does not appear to occur in the Isle of Arran, and the 

 light thrown upon the matter by Stephens, who says that the speck- 

 ling is with fuscous ("Illustrations," Haust., vol. iii, p. 185), shows 

 clearly that it could not have been this form that Curtis described, 

 and I think Weir was right in regarding the Isle of Lewis form as 

 one not previously named. 



The other form to which I would refer is Geotnetra destrigaria of 

 Haworth. It was described as a new species, and we are told of it 

 that "all the wings are speckled and clouded with greyish ash colour 

 with a white repandated undulated striga on both wings towards the 

 posterior margin,, bordered within with ash colour (Haw., p. 276). 

 Stephens, after repeating Haworth's description, says that it "differs 

 from the preceding (/. e. repandata) by being paler, more thickly 

 irrorated with fuscous, and by wanting the fuscous striae in the 

 middle of the wings : it may probably be a mere variety of the 

 former" {i.e. repatidatd). (" Illustrations," Haust., vol. iii, p. 185.) 

 It is now known that both destriga?-ia, Haw., and muraria. Curt., 

 are but forms of repandata, and Staudinger, both in his 1871 and 

 in his 1 90 1 catalogues, groups them together, and South also brackets 

 them in the "Entomologist" list; indeed in both descriptions the only 

 tangible character that is not common to the majority of the forms 

 of repandata is the speckling ; and it is evident that the grey, very 

 speckled form that is found, among others, in most places where 

 the species occurs, is the one referred to by both authors, and it 

 appears to me that the Irish specimens just mentioned may well be 

 included in this twice-described form. 



