174 TORTRICINA. 



vated scales, two small ones in a line with it at the apex, and three 

 others placed obliquely at the anal angle ; the vitta is spear-shaped, 

 with two minute white tufts on its interior edge, one near the base, 

 the other beyond the middle, and with a few chocolate-coloured 

 scales towards its apex ; besides the tufts enumerated above, there 

 are others, very minute, disposed here and there upon the surface. 

 Apical scales chocolate-brown at the apex, with pale bases, becoming 

 paler towards the anal angle. Cilia paler, merging into grey at the 

 anal angle, and into white beyond it. Posterior wings shining, pale 

 fuscous grey, clothed with coarse scales, the extreme margin narrowly 

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

 grey. Legs : anterior and intermediate pairs chocolate -brown above, 

 dull leaden straw-colour beneath ; the tarsi alternated with pale 

 brown ; posterior pair pale straw-colour, with darker marks on the 

 tarsi. Abdomen fuscous, the caudal tuft dull straw-colour. Exp. 

 al. 9 1 Jin. Anterior wings with a rich brown streak, extending from 

 the central tuft to the apex ; otherwise as in the tf . Abdomen not 

 tufted. 



A most lovely and remarkably variable species ; the varieties 

 assuming such strange and opposite appearance, that it really 

 requires an intimate acquaintance with the imago to be satisfied 

 that they are not distinct ; indeed there are many practised en- 

 tomologists who consider the varieties as good species ; but it 

 is worthy of remark that the varieties inter se are very defined 

 and constant. 



The imago seems chiefly confined to the south of England, and 

 appears from August to November, and occasionally even to Ja- 

 nuary and February. It occurs at Birch, Darenth, Greenhithe, 

 and Coombe Woods ; New, Whittlebury, Epping, and Hainault 

 Forests ; Ripley, Fetcham Downs, Sanderstead Downs, and Lea- 

 therhead Common ; also in Worcestershire. The New Forest 

 appears to be its metropolis, and the insect affects those trees 

 (Whitethorn and Blackthorn) which are overgrown with Lichen. 



The larva is unknown, although the insect has in one or two 

 instances been bred, promiscuously, from Whitethorn. 



11. permutana, Dup. Alis anticis basi pallide ochraceis, pone me- 

 dium badiis ; macula ad marginem dorsalem, alteraque ad apicem, 

 brunneis; posticis fusco-canis. J Exp. al. 8 lin. 



Head and face chocolate brown. Eyes back, slightly shining. Palpi 

 above and at the sides chocolate-brown, paler between and at the base 

 beneath. Antenna? dark brown, paler beneath. Thorax varying 

 from ochreous to straw-colour, darkest in front, the crest behind, 

 brown at the apex ; patagia ochreous at the base, the apices varying 

 from ochreous to straw-colour. Anterior wings rich straw-colour. 



