TORTRICINA. 23 



edge of the basal cloud, and the absence of a small cluster of 

 blackish dots in the subapical region ; and from the latter, by 

 its generally larger size, broader wings, and the absence of the 

 mottled and fuscous apex. 



The imago appears from June to August throughout the 

 metropolitan district; in Devonshire, the New Forest, near 

 Dover, and in other parts of the country ; in Scotland ; also at 

 Holywood, co. Down, in Ireland. 



The larva feeds on the White Birch (Betula alba), and is full- 

 fed about the end of May. 



3. Capraeana, Hub. Alls anticis niveis ; basi pone medium nigro, 

 fusco plumbeoque variegatis; apice strigis cinereis punctisque 

 atris in lineis longitudinalibus dispositis ; posticis griseo-fuscis. 

 c? Exp. al. 8-9 lin. 



Head pale brown, inclining to drab, palest close to the eyes. Face 

 dark brown below, paler above. Eyes black. Palpi fuscous above 

 and at sides, between and beneath w r hitish. Antenna pale fuscous. 

 Thorax fuscous, streaked transversely with darker brown, the crest 

 deep ferruginous or castaneous brown. Patagia coloured like the 

 thorax. Anterior wings dull, clouded from base to two-thirds the 

 length of the costa, and to near the anal angle on the dorsal margin, 

 with black, umber, fuscous and whitish markings, beautifully 

 mottled; the apex snow-white, somewhat glossy, with dull grey 

 curved streaks ; at the base is a rounded and very angulated patch ; 

 the central fascia darker, angulated on both edges, having a curved 

 incision of white posteriorly ; the space between this fascia and the 

 basal patch is suffused with fuscous, except towards the costa, where 

 is a white space thickly marked with the costal streaks ; in the 

 centre of the white apical space are several black spots and longi- 

 tudinal short streaks of the same colour. Apical scales with white 

 bases and tips, deep fuscous in the middle. Cilia shining drab, 

 mottled with iron-grey ; both becoming white at the anal angle. 

 Posterior wings pale grey, clothed with coarse fuscous scales, deepest 

 at the apex. Marginal scales fuscous, with straw-coloured bases. 

 Cilia pale straw-colour. Abdomen pale fuscous, the caudal tuft paler. 

 $ Exp. al. 9-10 lin. Colouring somewhat darker than in the tf . 



This beautiful species is comparatively rare, and does not vary. 

 It has much the appearance of A. Betuletana, but is easily distin- 

 guishable from it by the darker streaks on the tip of the wing, 

 a cluster of blackish dots in the subapical portion, and, lastly, by 

 the concave and sinuated posterior margin of the basal cloud. 



The imago is rarely taken at large, most of the specimens in 

 our cabinets being bred. It is comparatively new to our fauna, 

 the first record of it being by Mr. J. J. Weir, who bred it in 



