There are several characters which distinguish Heteroneiira 

 from Agromyza and congenerous groups, as the slender linear 

 abdomen, the large second joint of the antennae, the situation 

 of the seta and the neuration of the wings. They are said to 

 affect grassy situations : the species are rare in Germany, and 

 one only has been detected in France. The only one which 

 is known to inhabit this country is the species figured ; and 

 having taken the first specimen in Scotland in July 18^5, I 

 named it at that time Scotica; but Meigen having since de- 

 scribed it, my name must fall. On the 5th of July, 1836, after 

 a most awful thunder-storm at Ingleton in Yorkshire, I took 

 a female Heteroneura on the inside of the window of the inn. 

 Mr. Haliday has sent it to me from Belfast, and he informs 

 me that his U. spurca seems to be the Heteromyza Jlava of 

 Meigen. 



The plant is Phalaris arundinacea. Reed Canary-grass, 

 communicated by W. W. Saunders, Esq. 



