, of the Genus Elachista. 311 



Stockton-on-Tees, Scarborough and near Bristol, also near 

 Ziirich. 



39. Elachista Megerlella, Stainton. 



Closely allied to the preceding, but distinguished by the more 

 yellowish-white head and fascia, and by the darker anterior 

 wings. 



Expansion of the wings 5 lines. Head whitish (but with more 

 of a yellowish tinge than in Adscitella) ; anterior wings greyish- 

 fuscous, darker in the female, with a whitish yellow, rather 

 slender, nearly straight fascia, in the middle ; cilia grey, at the 

 apex pale yellowish. 



The dull greenish-grey larva making long, brown, slightly puck- 

 ered mines in the leaves of Brae hy podium, Bromus,&c., in March, 

 April and July. 



The perfect insect appears in May, June and August ; it occurs 

 throughout England, and in Ireland near Dublin. 



40. Elachista Obliquella, Stainton. 



Best distinguished from all the allied species by the yellowish 

 head. In general appearance most like Zonariella, but with no 

 orange scales. 



Expansion of the wings 4^ lines. Head yellowish ; antennae 

 dark fuscous, annulated with white ; anterior wings dark fuscous, 

 with a nearly straight yellowish fascia, rather beyond the middle ; 

 cilia grey, at the apex pale yellowish. 



Larva unknown. 



The perfect insect has occurred near London. Two specimens 

 are in Mr. Edleston's collection. 



41. Elachista Zonariella, Tengstrom. 



Easily recognized from all the other species with a pale central 

 fascia, by the orange scales on the outer edge of the fascia. 



Expansion of the wings 4 lines. Head brown ; anterior wings 

 dark fuscous, with a pale yellowish fascia in the middle ; the 

 fascia is nearly straight, broadest on the inner margin, and pos- 

 teriorly tinged with orange ; cilia greyish-fuscous, at the apex 

 yellowish-white. 



The dull grey-green larva mines the leaves of Aira ccespitosa, 

 making long, rather inflated, pale brown mines, in April and in 

 June. 



