TORTRICINA. 133 



ginous above, drab below. Eyes black. Palpi drab. Antennae grey. 

 Thorax and patagia ferruginous, the latter paler. Anterior wings 

 ferruginous, with brown markings and leaden-coloured clouds ; at 

 the base, and extending nearly to the middle of the dorsal margin, is 

 a chocolate-brown patch, with an oblique, straight edge, bordered 

 with whitish, and proceeding rather more than midway towards the 

 costa, where it suddenly softens into the slightly leaden lustrous cloud 

 above and beyond it. The apical portion of the wing is bright fer- 

 ruginous, inclining to red. The costa is marked with geminated 

 streaks throughout ; those before the middle close and less denned, 

 those beyond, four pairs in number, are of a shining drab -colour 

 somewhat golden, and converge to a point below the apical spot, which 

 is deep ferruginous and distinct. The ocelloid patch is present, but 

 small, undefined, and of a leaden tinge. Apical scales below the 

 apex deep brown with drab bases, then wholly drab to the anal 

 angle. Cilia interrupted by two light drab -coloured streaks below 

 the apex, then very pale brown, at the anal angle grey. Posterior 

 wings reddish brown, slightly darker towards the apex. Marginal 

 scales fuscous, with tawny bases. Cilia yellowish drab and dull. 

 Abdomen brown, the caudal tuft dusky ochreous. <j> Exp. al. 6-6^- 

 lin. Slightly brighter in colour. 



A rather common species, but does not vary. In size and 

 colour it very much resembles moderately-coloured specimens of 

 Lithographia Penkleriana, but may be always distinguished from 

 them by the more evenly-coloured apical portion of the anterior 

 wings. These two insects are frequently mistaken for each other, 

 and it often requires some discrimination to separate them. 



The imago appears in May and June in woods in the metro- 

 politan district, among Oaks and Beeches. It occurs also near 

 Dublin, and at Belfast in Ireland. 



The pupa is pale brown and measures 3| lines. 



The larva feeds on the Oak, and has attained the sobriquet 

 of the "Vaulted Chamber" maker (see Entomologist's Compa- 

 nion, p. 136), and Mr. T. Wilkinson of Scarborough was the first 

 to rear the imago (see Entomologist's Weekly Intelligencer, vol. ii. 

 p. 75), to whose liberality we are indebted for specimens of the 

 larvae. The colour is dull green. Head heart-shaped, diaphanous, 

 yellowish-brown with black wedge-shaped marks at the base, the 

 points of these marks directed towards the mouth ; the shield 

 yellowish, paler in front, with a transverse row of uneven, black 

 spots towards the base ; the segmental spots or warts are oval, 

 transverse, of paler green than the body, shining, and the pos- 

 terior dorsal pairs largest ; a dusky patch on the anal segment. 

 It draws the sides of an oak leaf together with white silk, some- 

 times the whole length, at others only the top or the basal half. 



