408 THE NORTH AMERICAN EMPIDJE—COQUILLETT. vol.xvui. 



Types.— :^os. 3184 aud 3185, U.S.X.M.; leugth, 6 to 7 mm. Four 

 males and three females were received from Mrs. A. T. Slosson and Mr. 

 Charles Kobertson. 



Locality. — Illinois aud Connecticut. 



EMPIS GULOSA, new species. 



Female. — Head blacli, bluish gray pollinose; anteuna^ black, third 

 joint broad at base, rapidly tapering to the apex, style slender, more 

 than one-half as long as the third joint; proboscis one-half longer than 

 height of head, palpi brown. Thorax black, opaque gray pollinose, 

 marked with four dark brownish vittie; its very short, sparse pile 

 black; pleura black, bluish gray iwllinose, pile in front of halteres 

 black; scutellum black, gray i)ollinose, bearing four bristles. Abdo- 

 men black, opaque brownish pollinose, that on the hind and lateral 

 margins of the segments light gray: on the hind margins of the first 

 three segments toward the sides is a fringe of rather long black bristles, 

 most developed on the second segment. Legs slender, simple, yellow, 

 including the coxie; tarsi toward the apex brown; femora destitute of 

 long bristles; middle metatarsi slightly thicker but shorter than the 

 front ones; hind metatarsi much thicker than the middle ones, sub- 

 equal in length to the front ones. Knob of halteres yellowish -white. 

 Wings grayish, stigma nearly obsolete, veins dark brown, no long 

 bristles on costa near its base. 



Type, — Xo. 3180, U.S.N.M.; leugth, 7 mm. A single female speci- 

 men collected by Mr. Charles Kobertson. 



Locality. — Illinois. 



EMPIS VIRGATA, new species. 



Male. — Black in all its parts except the whitish knob of halteres and 

 pul villi; all pile and bristles also black. Eyes separated by an interval 

 narrower than the lowest ocellus; third joint of antennte sublanceolate; 

 the style nearly one-fourth as long as that joint. Proboscis slightly 

 over twice as long as height of head. Thorax subshining, lightly gray 

 pollinose and marked with three shining black vittte; pleura grayish 

 black pollinose; scutellum shining, bare except the six marginal bristles 

 and a few marginal hairs. Abdomen depressed, shining ; hypopygium 

 rather small, central filament hidden; on the under side of the fifth 

 segment is a large, ovoid process, extending the entire length of the seg- 

 ment, its posterior end rather thickly beset with short, stout black 

 bristles. Legs slender, front metatarsi one-half thicker and one-half 

 longer than the middle ones, noticeably longer and thicker than the hind 

 ones. Wings pale brown, stigma darker brown, all the veins perfect. 



Type. — No. 3187, U.S.lSr.M.; length, 8 mm. A single specimen col- 

 lected by Prof. O. B. Johnson. 



Locality. — Washington. 



