OPOMYZA. 233 



a little more than its length from the border. Halteres whitish. Ab- 

 domen broad, slightly convex. Hind tarsi tawny. 

 Not rare. (E.) 



2. glabra, Fal. Oscinid. 9. 3 (1820); Meig. ; Mcq.; Zett. Ni- 

 gro-viridis, sublinearis, via; convexa, antennis halteribus pedibusque ni- 

 gris, alis albis, tarsis fulvis. Long. 1-li; alar. 2-2|- lin. 



Blackish-green, nearly linear, rather slender. Head and thorax slightly 

 convex. Antennae black. Thorax minutely punctured. Wings white ; 

 veins whitish ; costal vein ending on the hind border at a short distance 

 from the tip ; subcostal ending before one-third of the length ; radial 

 ending at very near the tip ; cubital ending at the tip ; prsebrachial 

 ending at the tip of the costal ; pobrachial hardly angular at its junc- 

 tion with the discal transverse ; discal transverse almost straight, slightly 

 oblique, parted by much more than its length from the prsebrachial 

 transverse and from the border. Halteres black. Abdomen subfusi- 

 form, depressed, a little broader than the thorax. Legs black; tarsi 

 towards the base and hind tarsi tawny. 



Very abundant on windows. (E. S. I.) 



Genus II. OPOMYZA. 



OPOMYZA, Fal. Opomyz. (1820) ; Meig. ; Westw. ; Mcq. ; Zett. 

 Musca p., F. E. S. ; Schr. ; Gmel. Dacus p., F. S. A. Tephritis 

 p., F. Geomyza p., Fal. ; Zett. 



Corpus sat longum, sublineare. Caput et thorax convexa, subsetosa. 

 Caput transversum, breve, thoracis latitudine. Antenna breves ; ar- 

 ticulus tertius rotundus; arista longa, gracilis, pubescens. Thorax 

 ellipticus. Ala3 mediocres vel sat angustse, plerumque maculate. 

 Abdomen lineare. Pedes mediocres. 



Body rather long, nearly linear. Head and thorax convex, beset with 

 a few bristles. Head transverse, short, as broad as the thorax. Pro- 

 boscis retracted when at rest. Palpi short. Antenna short ; first and 

 second joints minute ; third round ; fourth and fifth obsolete ; sixth or 

 arista long, slender, pubescent. Thorax elliptical. Scutellum rather 

 large, short-obconical. Wings of moderate length, rather narrow, ge- 

 nerally spotted ; costal vein ending on the hind border near the tip ; 

 subcostal ending at one-fourth of the length of the wing ; radial ending 

 at very little in front of the tip ; cubital ending at the tip ; prebrachial 

 ending at the tip of the costal ; pobrachial straight ; discal transverse 

 straight, slightly oblique, parted by half its length from the border, and 

 by more than its length from the pra3brachial transverse. Abdomen 

 linear, with six or seven segments. Legs of moderate length and thick- 

 ness. 



The Opomyza abound on herbage. 



VOL. II. 2 H 



