188 MUSCID^. 



The species generally inhabit herbage in fields and woods. 

 They may be thus grouped : 

 a. Praebrachial vein straight, parallel with the cubital. 

 b. Sixth joint of the antenna plumose. Species 1-3. 

 b b. Sixth joint of the antennae pubescent. 



c. Antennae not reaching the epistoma. Species 4-9. 

 c c. Antennae reaching the epistoma. Species 10, 11. 

 a a. Praebrachial vein undulating. Species 12. 



1. obsoleta, Fal. Ortal. 31.6 (1820) ; Meig. ; Mcq. ; Zett.flava, 

 F. ; Gmel. apicalis, Desv. Testacea, antennis pallidis, thorace vix 

 vittato, alts sublimpidis, abdominis segmentis antice subfuscescentibus. 

 Long. 2-2^ ; alar. 4-5 lin. 



Testaceous. Third joint of the antennae conical, more than twice 

 the length of the second. Thorax indistinctly striped. Wings nearly 

 limpid ; radial vein ending at about nine-tenths of the length ; discal 

 transverse almost straight, parted by more than twice its length from 

 the praebrachial transverse, and by much more than half its length from 

 the border. Fore borders of abdominal segments slightly brownish. 



Generally distributed. (E. S. I.) 



2. rorida, Fal. Ortal. 32. 7 (1820) ; Meig. ; Mcq. ; Zett. -flava, 

 Desv. Testacea, antennarum articulo tertio nigro, alis subluteis. Long. 

 2-2^ ; alar. 4-5 lin. 



Testaceous. Third joint of the antennae black, short- conical, rather 

 broad, testaceous at the base. Wings slightly luteous ; radial vein end- 

 ing at about nine-tenths of the length of the wing ; discal transverse 

 almost straight, parted by nearly twice its length from the prsebrachial 

 transverse, and by more than half its length from the border. 



Generally distributed. (E. S. I.) 



3. inusta, Meig. Zw. 5. 267. 21 (1826) ; Mcq. Testacea, palpis 

 nigris, alis sublimpidis, vitta antica macula una apicali alteraque apud 

 venam discalem transversam fuscis, abdomine fusco, femoribus et tibiis 

 posticis tibiisque anticis apice tarsisque piceis. Long. 2^-; alar. 5 lin. 



Testaceous. Head whitish beneath. Palpi black. Third joint of 

 the antennae rather broad, much more than twice the length of the 

 second. Wings almost limpid, with a brown spot on the tips of the sub- 

 costal and mediastinal veins, another on the discal transverse vein, and a 

 brown stripe extending along the border from half the length of the wing 

 to the prcebrachial vein ; radial vein ending at about eleven-twelfths of 

 the length of the wing; discal transverse vein indistinctly less than 

 twice its length from the praebrachial transverse, and undulating, parted 

 by rather more than half its length from the border. Halteres testa- 

 ceous. Abdomen brown. Legs testaceous ; tarsi, tips of fore tibiae and 

 of hind tibia, and of hind femora piceous. 



Generally distributed. (E. S. I.) 



