GOO PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



in the preceding species; third vein ending close to wing tip, fourth forking close 



to small cross vein; length, 2 mm ftuiillni, new species. 



A female specimen, collected June 16, by Mr. C. W. Johnson; dedicated to Dr. 

 J. B. Smith. Riverton, New Jer^^ey. 



7}//>r.— Cat. No. 5456, U.S. KM. 



4. Mesonotum opaque 6 



jNIesonotum jjolished 5 



5. Front femora each bearing 2 spinous bristles on apical half of under side, other 



femora destitute of them. Head and its members black (antenn;ie, except the 

 first joint, wanting), eyes quite widely separated; mesonotum and scutellum 

 black, pleura and abdomen dark brown, knob of halteres brown, legs dark 

 brown, front femora almost wholly, the base and a ring before apex of front and 

 middle tibia?, also the tarsi except apices of the joints, light yellow; first joint 

 of hind tarsi almost twice as long as the second; last joint about two-thirds as 

 long as the second, claws simple, nearly half as long as last tarsal joint; wings 

 hyaline, veins yellowish, apex of third vein at three-fourths length of wing, 

 apex of first vein near middle of the third, fourth forking considerably beyond 



the small cross vein; length, 2 mm expolitus, new species. 



A male specimen, collected July 3, by Mr. C. W. Johnson. Riverton, New Jersey. 



Ti/pe.— Cat No. 5457, U.S.N.M. 



Front and other femora bearing spinous bristles on nearly the entire length of un- 

 der side. Head black,.eyes rather broadly separated, antenna? brown, sutures of 

 the joints whitish, the basal joint yellowish brown, mouth parts dark brown; 

 body black, knobs of halteres and legs dark brown, a ring Vjefore apex of each 

 front femur, base of front tibia?, a ring l)efore apex of each front and middle 

 tibia, also the tarsi, except apex of each joint, light yellow; first joint of hind 

 tarsi nearly twice as long as the second, the latter slightly longer than the last 

 one, claws more than half as long as last tarsal joint, one on each tarsi bearing 

 a tooth near middle of under side; wings hyaline, pale grayish along the costa, 

 apex of third vein near four-fifths length of wing, apex of first at one-third 

 length of the third, fourth forking close to the small cross vein; length, 2.5 mm. 



joJiDsoni, new species. 



A female specimen, collected July 3, by ^Mr. C. W. Johnson, for whom the species is 

 named. Riverton, New Jersey. 



TyjK'.— Cat. No, 5-158, U.S.N.M. 



6. Under side of each front femur bearing at least 5, each middle femur about 2, 



each hind one about 4 spinous bristles. Head dark brown, eyes rather nar- 

 rowly separated, antenna? brown, the basal half yellow at sutures of joints, palpi 

 yellow, proboscis brown; thorax dark brown, light gray pruinose, a median 

 brown vitta on anterior half and a transverse row of four elongated brown 

 spots across the middle, scutellum yellow, knobs of halteres brown; abdomen 

 black, opaque, thinly gray pruinose; legs dark brown, front and middle femora 

 except their apices, usually the middle of the hind femora, front tibia? except 

 their apices, a ring before apices of middle and usually of the hind tibiae, also, 

 the tarsi, except apices of the joints, light yellow; first tarsal joint almost twice 

 as long as the second, the latter one and one-fourth times as long as the last 

 one, claws slightly more than half as long as last tarsal joint, one on each tarsi 

 bearing a tooth near middle of under side; wings hyaline, apex of third vein 

 near four-fifths length of wing, apex of first slightly before middle of the third, 

 fourth forking slightly before or at the small cross vein; length, nearly 3 mm. 



pulvereus, new species. 



