296 BULLETIN IIG, UNITED STATES NATIONAL MUSEUM. 



with one preapical bristle ; hind tibiae black, a very little yellowish 

 above at base; fore tarsi yellowish, a little infuscated from the tip of 

 the first joint; middle and hind tarsi black, the former with the first 

 joint a little tinged with yellow. Calypters and halteres yellow, the 

 former with black cilia. 



Wings dark grayish; last section of fourth vein bent just before its 

 middle; hind margin of wing not indented at tip of fifth vein; anal 

 angle prominent. 



Type. — In University of Lund, Sweden, from Europe. 



No. 218. DOLICHOPUS AETHIOPS, new species. 



Female. — ^Length, 5.2 mm.; of wing, 5.7 mm. Face wide, yellow- 

 ish brown, the black ground color showing through its pollen. Front 

 and occiput opaque, with yellowish brown pollen. Antennae 

 wholly black, still the first joint appears gray on the lower edge 

 when viewed from below; lateral and inferior orbital ciUa yellowish, 

 almost the color of the pollen of the face, about eight of the upper 

 cilia on each side black. 



Dorsum of the thorax greenish, but so thickly covered with yellow- 

 ish brown pollen as almost to conceal the ground color; pleurae more 

 blackish with gray pollen. Abdomen greenish with coppery reflec- 

 tions and wide black incisures, rather thickly covered with grayish 

 white pollen. 



Coxae, femora, tibiae and tarsi black, with the articulations of the 

 femora and tibiae yellowish; middle tibiae with one large bristle be- 

 low, their basitai^si without a bristle above; posterior basitarsi with 

 two large bristles above. Calypters and halteres yellow, the former 

 with black cilia. 



Wings dark grayish or brownish, the veins narrowly bordered with 

 brown; last section of fourth vein a little bent before its middle; hind 

 margin of wing not indented at tip of fifth vein, rather evenly rounded ; 

 wings wide, widest just before the tip of fiftli vein; anal angle prom- 

 inent. 



Described from 1 female taken by J. M. Aldrich at Lafayette, Indi- 

 ana, March 28. 



7V2>«.— Female, Cat. No. 23062, U.S.N.M. 



I am describing this rather remarkable form from the female, as it 

 seems to me that the male will very easily be recognized when found. 



No. 219. DOLICHOPUS, species. 



A female taken in Alaska which has the cilia of the calypters yel- 

 low, antennae mostly yellow, and the middle tarsi wholly deep black. 

 It does not seem best to give this a name without more specimens, in 

 fact not until the male is found; still it seems to be an entirely new 

 form and quite interesting, therefore I have run it into the table of 

 species and mentioned it here. Professor Hine took it in Alaska. 



