218 MUSCID^. 



alls sublimpidis, pedibus fulvis ; Mas, abdomine thorace non duplo lon- 

 giore; Toem. abdomine thorace plus diiplo longiore. Long. 3^-3 ; alar. 5 lin. 



Black, shining. Antenna? ferruginons at the base ; arista testaceous. 

 TJiorax red ; disc in front black, whence a black stripe extends nearly to 

 the scutellum. Wings nearly limpid. Halteres pale yellow. Legs 

 tawny ; tarsi darker. Male. Abdomen less than txoice the length of the 

 thorax. Fern. Abdomen a little more than twice the length of the thorax. 



Not rare. (E.) 



L. elongata, Meig.j has been recorded as a British species. 



Genus IIL LISSA. 



LissA, Meig. Zw. V. 370 (1836) ; Mcq. ; Zett. Ocyptera p., F. Chy- 

 liza p., Fal. 



Corpus cylindricum, sublineare, longissimum, gracillimum. Caput tratis- 

 versum, subquadratum. Antenna breves ; articuliis tertius secimdo 

 paullo longior. Alee parvse. Tedes sat breves ; femora postica crassa, 

 subtus spinosa. 



Body cyhndrical, nearly linear, very long and slender. Head subqua- 

 drate, transverse. Front concave. Face vertical. Epistoma and peri- 

 stoma not prominent. Antennce short, not near reaching the epistoma ; 

 third joint conical, a little longer than the second ; sixth setiform, long, 

 slender, pubescent. Thorax elongate-quadrate. Wings small ; costal 

 vein ending on the hind border very near the tip of the wing ; subcos- 

 tal ending at a little beyond one-third of the length ; mediastinal end- 

 ing at a little before half the length ; radial ending at a little before 

 five-sixths of the length ; cubital and prfcbrachial very slightly diverg- 

 ing between the transverse veins, and more slightly converging from 

 the discal transverse to the border ; discal transverse straight, upright, 

 parted by more than twice its length from the prsebrachial transverse, 

 and by full half its length from the border. Abdomen linear, narrower 

 than the thorax, and more than twice its length. Legs rather short, 

 pubescent, without bristles. Hind femora thick, aimed with spines 

 beneath. 



1. dolium, F. S. A. 315. 13 (1805).— Zawcenw^, Fal. ; Meig. ; 

 Mcq. ; Zett. Nigra, antennis fulvis, articulo sexto albido, alis limpidis, 

 pedibus fulvis, femoribus anticis apice tibiisque anticis fuscis, tarsis 

 anticis nigris. Long. 4 ; alar. 5 1 lin. 



Black, shining. Head and thorax beneath, and sutures of the ab- 

 domen with white tomentura. Antennfe tawny; sixth joint whitish. 

 Wings limpid. Halteres pale yellow. Legs tawny; fore tibiee and 

 tips of fore femora brown ; fore tarsi black. 



Not common. (E.) 



