BORBORIDES. 171 



Body narrow, linear, pubescent, with a few bristles. Head long. 

 Front porrect, conical, depressed. Face very oblique. Epistoma and 

 peristoma not prominent. Antenna porrect ; third joint elongate-coni- 

 cal, shorter than the second; sixth setiform, bare, incrassated and slightly 

 bent towards the base. Thorax elongate-subquadrate. Wings rather 

 short ; costal vein ending on the hind border near the tip of the wing ; 

 subcostal ending at much beyond one-third of the length ; mediastinal 

 ending at much beyond half the length ; radial ending at beyond seven- 

 eighths of the length ; cubital and praebrachial very slightly diverging 

 between the transverse veins, and very slightly converging from the 

 discal transverse to the tip ; discal transverse straight, nearly upright, 

 parted by nearly twice its length from the praebrachial transverse, and 

 by less than half its length from the border. Abdomen linear, longer 

 than the thorax. Legs pubescent ; femora with very few bristles. 



1. graminum, F. E. S. iv. 346. 143 (1781); Latr. ; Coqueb. ; 

 Meig. ! Zw. vi. pi. 57. f. 5 ; Mcq. ; Zett. Geoff. Nigra, cinereo-to- 

 mentosa, capite pallido, thorace quadrivittato, alis albis fusco variis, 

 abdomine univittato, pedibus fulvis. Long. 3 ; alar. 5^ lin. 



Dull-black, with cinereous tomentum. Head testaceous beneath, 

 white about the eyes. Front luteous, ferruginous on each side. Tho- 

 rax with four black stripes, outer pair dilated in front. Wings whitish, 

 partly brown in front and towards the tips ; transverse veins clouded 

 with brown. Halteres pale yellow. Abdomen with a cinereous stripe. 

 Legs tawny ; tarsi brown towards the tips. 



Not common, but appearing occasionally in profusion. (E.) 



The following additional species of this family have been re- 

 corded as British : 



TETANOPS, Fal. LUCINA, Meig. EURINA, Meig. 



1. myopina, Fal. 1. fasciata, Meig. 1. lurida, Meig. 



SUBFAMILY 2. BORBORIDES. 



BORBORIDES, Hal.; Westw. Cl. 1. 144 (1839). Borborus, Meig. 

 Spharocera, Latr. Copromyza p., Fal. Putrellide&p.j'Desv. Spha- 

 roceridce, Mcq. ; Hal. E. M. Vopromgzma, Zett. 



Antennarum articulus tertius sphceroideus ; arista dorsalis, elongata, gra- 



cillima. Alarum vena subcostalis vix costee trientem pertingens. Alula 



fere nulla. Metatarsus posticus dilatatus, articulo secundo brevior. 



Front broad, subquadrate, a little inclined. Orbits, frontalia, and 



stemmatic triangle usually distinguished. Face broad, impressed, 



membranaceous. Epistoma prominent, bearing bristles at the corners. 



Clypeus exserted, transverse. Peristoma very large, rounded. Labium 



thick, fleshy ; below with a broad bellying sheath of horny consistence. 



