220 MUSCIDjE. 



Ala3 sat angusta3. Abdomen thorace longius. Pedes graciles, sat 



longi. 



Body nearly linear, rather long, shining, almost bare. Head slightly 

 prominent in front, not broader than long. Face very oblique. Epi- 

 stoma and peristoma not prominent. Eyes oblong. Proboscis thick. 

 Palpi subclavate. Antenna short, not near reaching the epistoma; 

 third joint conical, a little longer than the second ; sixth plumose or 

 pubescent. Thorax fusiform. Wings rather narrow ; costal vein ending 

 on the hind border at some little distance from the tip of the wing ; sub- 

 costal ending at about one-third of the length ; radial ending at about 

 seven-eighths of the length ; cubital ending at the tip ; pra3brachial 

 curved and nearly parallel to it. Abdomen linear, lanceolate, or fusi- 

 form, longer than the thorax. Legs slender, without bristles, rather 

 long. 



The Psila frequent herbage. The species may be thus charac- 

 terized : 



, Arista plumose. Species 1. 

 a a. Arista pubescent. 



b. Body pale. 



c. Wings greyish. Species 2. 



c c. Wings slightly testaceous. Species 3. 



b b. Abdomen black. Species 4. 



b b b. Body black. Species B. 



1. fimetaria, L. Fn. 1862 (1761); F. ; Schr.; Gmel. ; Latr. ; 

 Fill. ; Meig. ; Mcq. ; Zett. -flava, Schell. ; Pz. Fn. ! xx. 2Z.testacea, 

 Desv. Testacea, capite antice subtusque albido, arista piumosa, alis 

 subflavescentibus, abdomine fulvo. Long. 4 ; alar. 8 lin. 



Testaceous. Head whitish in front and beneath. Arista plumose, 

 black at the base. Wings slightly yellowish ; prasbrachial vein slightly 

 diverging from the cubital between the transverse veins, curved and 

 nearly parallel to it between the discal transverse and the tip ; discal 

 transverse upright, nearly straight, parted by nearly four times its 

 length from the praBbrachial transverse, and by one-third of its length 

 from the border. Abdomen fusiform, tawny. 



Generally distributed. (E. S. I.) 



2. mfa, Hoffm.; Meig. Zw. v. 357. 3 (1826); Zett. Ferruginea, 



alis subcinereis, venis transversis infuscatis, pedibus fulvis. Long. 2f ; 

 alar. 5^ lin. 



Ferruginous. Head testaceous beneath. FTings greyish ; transverse 

 veins slightly clouded with brown ; prsebrachial vein almost straight and 

 very slightly converging to the cubital between the discal transverse 

 and the tip ; discal transverse parted by more than twice its length 

 from the prsebrachial transverse, and by a little less than its length from 

 the border. Legs tawny. Fern. Abdomen oblanceolate. 



Bare. (S.) 



