AMERICAN DIPTERA. 279 



contiguous; first two joints of the anteunse dull testaceous, third joint rather 

 short, ovate, black, provided with a style equal to itself; proboscis short, 

 piceous. Dorsum of thorax greenish blue; pleurae piceous, opaque, shining blue 

 before the base of the wings; pile in front of the halteres black. Color of the 

 abdomen brassy blue, changing to violaceous towards the tip. Hypopygium 

 small, short, black and black-pilose, supported by the last ventral segment which 

 is arched and clothed with black pile; lateral lamellae short, upper lamellae ex- 

 cised; penis exposed, very slender towards the tip. Legs dark piceous, black- 

 pilose, of the front and middle legs, the apical third of the femora, and the tibiae 

 except the tip, of the hind legs, the knees, the second and third joints of all the 

 tarsi, together with the extreme apex and basal fourth of the first joint, pale 

 lutescent; the front and middle tibiae above with ordinary pile, towards the apex 

 with compressed pile ; the front and middle metatarsi above short-pennate ; of 

 the hind legs, the tibite and the femora compressed, the tibite pennate above, 

 below with dense pile, the femora on both sides with feathery scales. Halteres 

 blackish brown. Wings clear hyaline, the base, the costa, and the edges of the 

 discal cell bordered very broadly with black, so that, except for a triangle ex- 

 tending from the axillary margin to the fourth vein, and except for the spot in 

 the discal cell contiguous with the front margin of the triangle, the three poste- 

 rior cells are hyaline, the basal half of the first and the base of the others ex- 

 cepted. The third longitudinal vein, besides the anterior, perpendicular, and 

 slightly recurved branch sends another short branch into the first posterior cell, 

 equidistant from the median cross-vein and the apex of the wing; discal cell 

 broad, obliquely truncate; the fourth longitudinal and the intercalary veins 

 slender, evanescent before the margin of the wing. 3.5 mm. 



Mexic(i (Deppe, Berlin jNIuseuni). 



One injured specimen labelled Mexico answers with this descrip- 

 tion, except that the hypopygium is broadly open, and evidently of 

 different conformation. 



Liaiupreiupis siiperba Loew. 

 Cent, viii, 57. 



Male. — Brassy black. Proboscis equal to the head and thorax combined, fus- 

 cous. Antennae black, the first two joints black -pilose, the first .somewhat long, 

 the apical style whitish. Eyes contiguous. Thorax and scutellum brassy green, 

 shining, clothed with short black pile. Pleurae brownish black, opaque, with a 

 small subalar callosity and a median spot blue-green, black pilose in front of the 

 fuscou.s halteres. Abdomen blue-green, merging into very bright cupreous 

 towards the apex and chalybeous at the very tip. Legs black, closely covered 

 with short concolorons pile, the tibite and the first joint of the tarsi moderately 

 thickened, the front femora except the tip luteous, and the other femora circled 

 by a subapical, very broad, luteous ring. Wings black, the front branch of the 

 third longitudinal vein ascending straight to the costa. 4 mm. 



Cuba (Poey). 



Lainpreiiipis cyanea Bellardi. 

 Mem. d. Reale Accad. d. Scienze d. Torino, Ser. 2, vol. xxi, p. 199. 



Female. — Metallic blue. Front broad, deep, shining, blue-black ; first antennal 



TEAN.S. AM. ENT. SOC, XXVIII. AUGUST, 1902 



