ZooL.— Vol. II.] WHEELER— DOLICHOPODIDM. 1 9 



the tip; arista rather long, tapering, moderately plumose. Front bright 

 metallic green. Postocular cilia black above, silvery white below. Thorax 

 blackish bronze, passing into dull metallic violet posteriorly, opaque with 

 grayish dust on the humeri. Posthumeral depression with a distinct patch of 

 silvery white dust. In front of the root of the wing on either side there is a 

 large velvety black, dumb-bell-shaped blotch. Scutellum bright metallic 

 blue-green. Abdomen bright metallic cupreous with black incisures and a 

 conspicuous patch of white dust on the side of each segment. Hypopygium 

 rather short and thick, sessile, covered with white dust. Lamellae short, 

 elliptical, fringed with rather dense hairs which are white on the lower (mor- 

 phologically dorsal) surface. The upper inner edge of each lamella is pro- 

 duced into a long piceous filament fringed with hairs. Pleurae and coxae 

 black, thickly covered with white dust. Tips of the coxce reddish yellow; 

 fore and middle pairs with very conspicuous black hairs on their anterior 

 lower surfaces. Legs reddish yellow; anterior tarsi, from the tip of the first 

 joint, hind tarsi entirely, upper surfaces of hind femora and tips of hind 

 tibiae blackened. Middle femora with distinct black cilia along their lower 

 surfaces. Wings grayish hyaline, scarcely darker towards the costal margin. 

 Costa not incrassated. Neuration normal, the arcuate end of the fourth vein 

 forming an obtuse angle with the straight portion of the same vein. Halteres 

 and tegulse yellow, the latter with conspicuous black cilia. 



Female. Length 3.3 mm.; length of wing 3.5 mm. Face somewhat 

 broader than that of the male, covered with yellowish brown dust. Front 

 bright metallic blue. Coloration of the body like that of the male; wings dis- 

 tinctly darker. 



One male and two female specimens from Charlotte Har- 

 bour and Ormund, Fla., received from Mr. C. W. Johnson. 



This species is closely related to P. jiliferus Aid., which 

 it resembles in the structure of the hypopygium. The fore 

 coxse of my specimens of P. froj^inquus are strongly 

 infuscated, only their tips being yellow. If present in P. 

 -filiferiis, the conspicuous ciliation of the middle femora is 

 not mentioned by Aldrich. 



20. Paraclius filiferus Aldrich. 



Two females received from Mr. C. W. Johnson, one 

 from Charlotte Harbour, Fla., the other from Lake Worth, 

 Fla., appear to belong to this species. The fore cox^ and 

 hind femora are entirely yellow, the scutellum bright cupre- 

 ous, the face covered with silvery white dust. The arc-like 

 terminal curvature of the fourth vein is somewhat more 

 decided in this species — "almost a right angle," according 

 to Aldrich — than in P. ^rofinquns. Loew's description of 



