204 TORTRICINA. 



stant in colour ; distinguished from its congeners by the large 

 maculated pale triangular blotch on the dorsal margin, and by the 

 pale base of the posterior wings in the 3 . 



The imago appears in April and May ; abundantly in Oaks ; 

 and is distributed throughout the country. It is likewise common 

 in the vicinity of Edinburgh, near Greenock, &c. 



The larva feeds in the bark of Oaks. 



4. nigricostana, Haw. Alis anticis brunneo-ustulatis, nebulis satu- 

 ratioribus; macula magna irregulari medio marginis dorsalis 

 ochracea ; posticis nigris. $ Exp. al. 5|6 lin. 



Head smoky brown, slightly paler behind. Face smoky brown. 

 Eyes black. Palpi longer than the head : dull, dusky brown above 

 and at the sides, drab beneath. Antenna? deep fuscous. Thorax and 

 patagia dark dusky brown. Anterior wings glossy umber, with 

 slightly-lustrous clouds and streaks, and a large dusky-ochreous 

 blotch on the dorsal margin, of an irregular, indistinctly-defined, 

 triangular shape, and produced at the apex. The costa is spotted 

 throughout with dark umber, and the ocelloid patch is indicated by 

 a leaden-coloured cloud. The costal and apical regions are slightly 

 shining, with dull, umber markings, especially near the edge of the 

 dorsal blotch near the base, at the middle of the costa, within and 

 above the anal angle, and on the apical margin. Apical scales umber. 

 Cilia dusky brown. Posterior wings rich bronze. Marginal scales 

 same colour, with paler bases. Cilia fuscous grey. Abdomen deep 

 brown. 5 Exp. al. 5J 6 lin. 



Far from abundant ; it varies in size and in the intensity of 

 its colouring. 



The imago appears in June and July, in hedges and on banks, 

 flying in the afternoon. It occurs throughout the south and 

 in the west of England, among Stachys sylvatica (Hedge- 

 Woundwort), in the root of which plant the larva is said to feed. 



Genus VII. STIGMONOTA, GUENKE. 



Palpi slightly longer than the head, remote, diverging : basal joint 

 curving upwards, elongate, truncate ; apical straight, obovate, as long 

 as the basal ; middle as stout as the basal, slightly thickened towards 

 the apex, ascending, curved, not three times as long as the apical. 

 Thorax slender, ovate. Anterior wings : length more than twice the 

 width ; costa regularly arcuated ; apex obtuse ; apical and dorsal 

 margins rounded ; the subcostal nervures equidistant ; costal vein 

 reaching the margin before the middle. The discoidal cell receives a 

 nervure inserted between the first and second subcostal nervures. 



