tennae are united ; I could not discover a suture ; if there be 

 one, the antennae ought to be described as 5-jointed. 



These insects frequent plants and flowers in search of other 

 Diptera upon which they live : the following are British 

 species : 



1. funebris Fah. — culiciformis Fah. Ent. Syst. 



Black, wings fuscous with a distinct brown stigmatiform 



spot : 2 to 2\ lines long. 



End of July, amongst rushes. Black-gang-chine, Isle of 

 Wight; middle of August, Isle of Arran;"end of August 

 alighting upon the leaves of Rhododendrons in Lord Malmes- 

 bury's plantations near Heron Court. 



2. vitripennis Meig. v. 2. p. 348. n. 2. 



Black, wings hyaline, the stigmatiform spot pale ochreous: 



1 f to 2 lines. 



End of July, Black-gang-chine, with the last species. 



3. flavipes Fab. — Meig. pi. 21 .^g. 20. 



Black, anterior legs and hinder tarsi ochreous ; wings hy- 

 aline : 1^ to 2 lines. 

 June, Dorsetshire and New Forest. 



4. fumipennis Hqffl — Ahrens 12. 25. 



Black, shining ; thorax with cinereous stripes ; wings pale- 

 brownish, anterior legs deep dull ochreous as well as the 

 hinder tarsi : 2 lines. 



June Dorset, and Horning marshes Norfolk ; 9th July Turk 

 Mountain near Killarney. 

 o. pilipes Meig. — Cu7't. Brit. Ent. pi. 661. c?. 



The only specimens I have seen are two which I took the 

 beginning of September, flying about Laurel-trees in the gar- 

 dens at Durnford near Salisbury, the seat of the late Honour- 

 able Mrs. Robinson. 



For specimens of Sesleria ccerulea, Blue Moor-grass, I am 

 indebted to the Rev. I. Howson, who gathered them on Gig- 

 gleswick Scarrs, Yorkshire. 



im 



