252 TORTRICINA. 



The irnago appears in June and July throughout the country ; 

 also in Scotland and in Ireland. 



The pupa is 3 lines in length, and of a chestnut-brown colour. 



The larva is polyphagous, of a dull chocolate-brown colour, 

 and has a very shining brown head, with darker markings. 

 When full-grown, it is about 7 lines in length, and before 

 assuming the pupa state it spins a dead-white web, uniting the 

 leaves of the food-plant. 



5. alternella, Schiff. Alis anticis albidis, aut cinereis ; basi apice- 

 que fasciis abbreviatis, medio altera interrupts, fuscis, nigro 

 punctatis ; posticis fuscis, basi dilutioribus. tf Exp. al. 7-^-8 lin. 



Head drab. Face paler. Eyes black. Palpi as long as the head, 

 drab, paler beneath. AntennaB dark drab. Thorax dusky drab ; 

 darkest in front. Patagia same colour as the thorax ; the apices 

 pale. Anterior wings dull, varying from very pale drab, inclining to 

 cream- colour, to grey, with fuscous markings, speckled with umber. 

 The base slightly tawny, near which is an abbreviated fascia, which 

 proceeds two-thirds towards the dorsal margin, angulated on both 

 sides, and constricted in the middle. At the middle of the costa 

 commences a broad, oblique, irregularly-shaped, angulated fascia, 

 which attains the dorsal margin towards the anal angle ; this fascia 

 is widest at its origin, it is constricted on its posterior edge before the 

 middle ; after which it dilates, and then narrows to the dorsal margin, 

 before attaining which, it is very frequently interrupted. Towards 

 the apex, on the costa, is an irregularly- trigonate patch, more or less 

 developed and denned in different specimens. In the middle of the 

 apical margin are several small fuscous patches, edged anteriorly 

 with umber. The pale portions of the wing streaked faintly with 

 fuscous. Apical scales drab, tipped with umber. Cilia dusky, or 

 fuscous grey, tipped with dirty white, or pale grey. Posterior wings 

 pale grey, with a slightly pearly lustre, and merging into pale fuscous 

 at the apex. Marginal scales pale fuscous, the bases pale. Cilia 

 pale, fuscous drab. Abdomen pale grey ; the apex luteous. $ Exp. 

 al. 9-9i- lin. Anterior wings marked like those of the tf , but the 

 markings more denned. 



Less common than either of the preceding. In appearance 

 resembling C. subjectana, but is much larger, and the central fascia 

 not so evident towards the dorsal margin. 



The imago appears in June and July, and occurs at various 

 places round London ; in Devonshire, the New Forest, in Wor- 

 cestershire, Cheshire, &c. In some places commonly, especially 

 at Margate It likewise occurs in Ireland. 



