220 MUSCIDjE. 



A1& sat angustse. 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 : 



a. Arista plumose. Species 1. 

 a a. Arista pubescent. 



I. Body pale. 



c. Wings greyish. Species 2. 



c c. Wings slightly testaceous. Species 3. 



b 6. Abdomen black. Species 4. 



b b 6. Body black. Species 5. 



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

 Fal. ; Meig. ; Mcq. ; Zett.JZava, Schell. ; Pz. Fn. ! xx. 2Z.testacea, 

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

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



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

 black at the base. Wings slightly yellowish ; praBbrachial 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 pra?brachial transverse, and by one-third of its length 

 from the border. Abdomen fusiform, tawny. 



Generally distributed. (E. S. I.) 



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

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

 alar. 5^ lin. 



Ferruginous. Head testaceous beneath. Wings greyish ; transverse 

 veins slightly clouded with brown ; praBbrachial 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 pra3brachial transverse, and by a little less than its length from 

 the border. Legs tawny. Fern. Abdomen oblanceolate. 



Bare. (S.) 



