CATAIOGTJE OF MOTHS. 45 



Durham, and at Rockwell, Darlington. It is very common 

 both, in Castle Eden and Hezleden Denes. It flies freely before 

 dusk, early in June, and sometimes rests on trees, sitting with 

 its wings roof-like, a mode of resting in which it differs from 

 the genus Tortrix, in which Doubleday and Meyrick have 

 placed it. AYilkinson says, "Scotch specimens are mostly 

 darker than the southern ones, constituting the var. E., 

 siibfasciana. E.ferriiginea is an extension of the same variety, 

 but darker and more evenly coloured." I have taken both 

 these varieties in Hezleden Dene. 



BRACHYT^NIA. 



7. Brachytaenia semifasciana, Haw. 



Brachytcenia semifasciana, Staint. Man., vol, ii., p. 192. 



„ ,, Wilk. Brit. Tort., p. 19. 



Encosma ,, Meyr. Hdbk. Brit. Lep., p. 46 1 . 



Eather a local species, but occurring in both counties. Mr. 

 Finlay found it in Meldon Park, but it was always scarce. 

 Mr. Sang beat it out of sallows in Castle Eden Dene, l7th July, 

 1853. It is sure to occur elsewhere. 



ANTITHESIA, Steph. 



8. Antithesia corticana, Hub. 



Antithesia corticana. Staint. Man., vol. ii., p. 193. 



„ „ Wilk. Brit. Tort., p. 21. 



Encosma ,, Meyr. Hdbk. Brit. Lep., p. 461. 



This is the Picana of Doubleday's list. It is rather a local 

 species, but not uncommon where it occurs. Mr. Einlay found 

 it plentiful in Old Park, Ketherwitton. Mr. Sang got it at 

 Castle Eden Dene on 12th July, 1857, and larvae there on 3rd 

 June, 1860, and near Darlington on 20th August, 1859. It 

 also occurs at Edder Acres, near Hartlepool, on birch trunks, 

 not uncommonly. The larva feeds on birch. 



