188 Mr. A. H. Haliday on new British Insects. 



On sandhills along the east coast of Ireland, among the stems of 

 the sea reed ; May — August. 

 Ochthiphila geniculata, C. No. 5. ibid. 



0. cana antennis jialpis pedibus nigris, genubus flavis, m.f. ; ab- 

 domine qudrifariam nigro-punctato, /'. ; bifariam obsoletius 

 punctato, m. Long. 1 1 lin. 

 On grassy slopes of the Sugar-loaf mountain, county Wicklow, 

 May. 



Gen. Heteroneura. Subj. Clusia (Cleora, C. App. 282.) 

 Tibiae cilio praeapicali nuUo. Alarum nervi transversi subremoti. 



Sp. 1. H.flava HeteromyzaJlava,Meig.vi.4G. Heteroneura spurca, 

 Ent. Mag. i. 171. 



Gen. Opomyza. Subg. Tethina, C. App. 281. 



Facies impressa, epistomate prominulo nudo. Peristoma elonga- 

 tum. Labium cylindricum bigeniculatum. Antenna? brevissimaj 

 articulo 3° suborbiculato arista gracili subnuda. Alag apice rotun- 

 datee : nervus transversus ordinarius ab alae margine distans. 

 Opomyza illota, C. 1338. 27. App. 281. 



0. Tethina canescens fronte antennisque ferrugineis, facie palpis 

 tarsis halteribus albidis, alis albis, m.f. Long. 4 — 1 lin. 



Somewhat like Oscinis {Siphonella) alhipalpis. 



In the flowers of Cakile maritima and Convolvulus soldanella ; Kil- 

 liney Bay, county Dublin ; June. 



Gen. DiASTATA. Subg. Camilla, C. 1337^. App. 281. 



Tibiae cilio iirEeapicali nullo. Antennae decumbentes facie bre- 

 viores, articulo 3° oblongo, arista pectinata. Labium incrassa- 

 tura. 



D. glabra. Drosophila id. Fall., Geom. 8. 12. Diastata cerata, 

 C. App. 281. 



Blarney, in July ; also in England ; F. Walker. 



Obs. This species, though arranged under Drosophila by- 

 Fallen and Meigen, wants the most prominent characteristics 

 of that genus, viz. the hirsute eyes and serrate caudal plates. 

 I have therefore referred it to Diastata. 

 Sphcerocera scabricula, C. 1350. 3^. Ent. Mag. iii. 320. 



Having lately met with this species in abundance, I find 

 that the specimens from which my description was drawn were 

 pale-coloured from immaturity ; but the form of the head and 

 hind tarsi, the wings and the white arista will characterize the 

 species beyond mistake. 



