British Species of the Genus Gelechia of Zeller. 19 



fasciae sloping obliquely outwards from the costa, each composed 

 of three black dots. The first fascia is before and the second 

 beyond the middle ; between and below them, in the groove, lies 

 a single black dot, and there are a few black streaks towards the 

 apex. Posterior wings fuscous. 



This insect has been reared in May, from larva? found on sal- 

 lows in September. It is quite distinct from proximella, as a 

 variety of which it was placed by Zeller (Isis, 1839). 



Sp. 56. Humeralis. 



G. humeralis, Z. 



An. Lyellella, C, Westw. 



Ti. decorella, Haw. 



This species varies much in its markings. Sometimes it is 

 grey, with scattered black streaks ; sometimes the costa is white 

 and the inferior edge broadly black, and at others the whole sur- 

 face of the wings is deep fuscous, but the strong black mark on 

 the edge of the costa at its base is always constant. 



The Entomological Society has Haworth's specimen of decorella, 

 which is certainly this species, but from an unfortunate error his 

 description, which I subjoin, cannot be applied to this or any 

 other species. 



" Tinea decorella, Haw. (the neat). 



" Alis anticis capiteque niveis, costa ipsa interrupting plagaque 

 communi niveis." — (Transactions Ent. Soc. Lond. 1812, 

 page 338.) 



Sp. 57. Costella. 



An. costella, St., Westw. 



Expansion of wings, 6 — 7 lines. 



Head, thorax and palpi ochreous, the terminal joint of the latter 

 black at the tip and in the centre ; antenna? fuscous, faintly annu- 

 lated. Anterior wings deep ochreous ; at about one-fourth of 

 their length from the base commences a large black, somewhat 

 angular blotch, beginning abruptly, extending downwards to the 

 groove, and then continued upwards and onward to three-fourths 

 of the length of the wing, leaving the remaining fourth ochreous. 

 Towards the apex are mostly some black clots, and more are 

 sometimes seen on the outer margin down to the anal angle. 

 Posterior wings fuscous. Varies considerably in the intensity of 

 the colouring. 



Taken in hedges near London, throughout the summer. 



c 2 



