124 TORTRICINA. 



The larva feeds in the main bark and in the young shoots of 

 Poplars. In the bark, its presence is detected by a conical lump 

 of rust-coloured "frass" projecting. In the young shoots they 

 take up their position at the tips, which are swollen into a gall- 

 like process with a hollow mass of frass outside, somewhat 

 resembling the case of a Coleophora (an extensive genus in the 

 family Tineina). The larva itself is sluggish, of a dirty-brown 

 colour, paler at the anal extremity; attenuated at both ends; 

 about five lines in length when full grown. The head shining, 

 pale-chestnut colour. The shield large, black, shining, and 

 deeply foveated at the sides. 



8. pauperana, Parreys. Alls anticis angustis, albis, cinereo varie- 

 gatis ; basi macula lata angulata fusca ; fascia mcdio dilution ; 

 ante apicem atomis atris irregulariter dispositis ; posticis fusco- 

 griseis. rf Exp. al. 7-1-8 lin. 



Head pale fuscous. Face pale fuscous, darker than the head. 

 Eyes black. Palpi above and between griseous ; at the sides and 

 beneath dark fuscous, inclining to dusky ferruginous. Antenn 

 pale fuscous. Thorax pale fuscous, streaked transversely with 

 griseous. Patagia pale fuscous at the base ; drab at the apex. An- 

 terior wings greyish, white, with a fuscous patch at the base, streaked 

 with darker markings, particularly at its posterior margin, which is 

 very undulated and oblique, extending nearly twice as far upon the 

 dorsal as upon the costal margin ; in the centre of the costa is an 

 oblique, somewhat quadrate, grey streaked mark, with another un- 

 defined one near the anal angle, maculated with brown on the dorsal 

 margin : in some specimens these two markings are produced so as 

 nearly to unite, thus, considered together, forming an interrupted 

 central fascia. There is a row of small intense brown spots towards 

 the apical angle ; a pale grey cloud occupies the place of the ocelloid 

 patch, and the pale portions of the wing are more or less streaked 

 and tinged with grey, and a few small similar coloured spots are on 

 the costal and dorsal margins ; no apical spot. Apical scales brown, 

 interrupted by a streak of w r hite in the middle, with pale bases. 

 Cilia paler. Posterior wings very pale grey, with the extreme margin 

 fuscous. Marginal scales pale fuscous, with paler bases. Cilia pale 

 grey, with white bases, 'becoming wholly white at the anal angle. 

 Abdomen and caudal tuft pale fuscous. $ Exp. al. 8-8-J- lin. 



This is a "rare species, varying somewhat in size and in the in- 

 tensity of its markings; distinguished from its congeners by the 

 attenuated form of its wings, and by the basal patch dilating 

 broadly along the dorsal margin. 



The imago appears at the end of March and beginning of 

 April, in hedges near Darenth Wood, among wild Hose-bushes. 



