of the Genus Elachista. 303 



M«/e.— Expansion of the wings 3| lines. Head dark grey ; an- 

 terior wings blackish grey, with a whitish, slightly oblique and 

 rather indistinct fascia before the middle and two whitish opposite 

 spots beyond the middle ; at the apex of the wing is a whitish spot 

 in the cilia. 



Female. — Expansion of the wings 4 lines. Head dark grey ; 

 anterior wings black ; before the middle is a white, slightly 

 oblique fascia, and beyond are two white spots exactly opposite ; 

 at the apex of the wing is a whitish spot in the cilia. 



The larva, which is greyish yellow, with a black head and two 

 black spots on the second segment, feeds on a species of Poa, in 

 March and beginning of April. 



The perfect insect appears in May, and has occurred near Liver- 

 pool and near Edinburgh. 



19. Elachista Stabilella, n. sp. 



Well distinguished by the whiteness of the head, the oblique- 

 ness of the fascia, and the spots being exactly opposite. 



Expansion of the wings 3| lines. Head white ; ajiterior wings 

 greyish black, with an oblique white fascia before and two white 

 spots exactly opposite beyond the middle ; at the apex of the 

 wing is a whitish spot on the cilia. 



Larva unknown. 



The perfect insect appears in June and July, and is not uncom- 

 mon in Headley Lane. 



20. Elachista Bedellella, Sircom. 



Best distinguished by the broad truncate anterior wings, and the 

 spots frequently united to form a fascia. 



Expansion of the wings 3| lines. Head grey ; anterior wings 

 grey, rather short and broad, with a straight whitish fascia before 

 the middle and two whitish spots beyond the middle, exactly 

 opposite, and sometimes imited so as to form a second fascia ; the 

 apex of the wing is remarkably truncate ; apical cilia whitish. 



The ground colour of the female is paler, and at the base almost 

 whitish. 



The greyish-green larva mines the tips of the leaves of Axiena 

 pratensis in April and July, the mined place appearing white, with 

 a purple tinge. 



The perfect insect appears in May and August, and occurs 

 generally on the chalk and limestone formations. 



y 2 



