NO. 1225. SOME NEW DIPTERA—COQIULLETT. 609 



TANYPUS JOHNSONI, new species. 



Male. — Yellow, the scutelluin. halteres. and tursi white, apical joint 

 of the latter, a band before apex of each femur and near base of 

 each tibia brown, abdomen whitish, each segment with an irregular 

 brown mark, composed principally of two median vittse and a poste- 

 rior arcuate fascia, most distinct on the median segments, on the 

 apical ones expanded so as to cover nearly the entire dorsum; hairs of 

 antenna? mixed pale yellow and brown, their apices chiefly whitish, 

 me.sonotum opa(iu(\ whitish pruinose, in certain lights three dark yel- 

 low vitti« are visible; front tarsi clothed with very short hairs, the 

 first joint two-thirds as long as the tibia; wings whitish hyaline, almost 

 wholl}^ covered with yellow hairs, humeral cross vein bordered with 

 brown, a broad pale l)rownish fascia crosses the wing just before the 

 small cross vein, and a second slightly broader one at apex of first 

 vein, fifth vein forking a short distance before the small cross vein; 

 length, 3.5 mm. 



Female. — Difi'ers from the male as follows: Abdomen with dark yel- 

 low mottlings, destitute of l)rown markings, hairs of antenna' whitish, 

 vittce of niesonotum more distinct; length, 8 nmi. 



A specimen of each sex. collected June IT and IS by Mr. C. W. 

 Johnson. 



llahltat. — Riverton, New Jersev. 



Tyjje.—C-iit. No. 5489, U.S.N.M. 



TANYPUS BIFASCIATUS, new species. 



Male. — Difi'ers ixom. johnmnl -a.^ follows: Front corners of scutellum 

 brown, apical joint of tarsi wliite, no brown band on femora nor on 

 tibite, 1)rown of abdomen confined to a fascia at base of segments 2 to 6 

 and middle of dorsum of the seventh (front tarsi wanting), hairs of 

 wings chiefiy brown, hiuueral cross vein not bordered with brown, the 

 first fascia lies beyond the small cross vein; length, 4 mm. 



Female. — Hairs of antennte whitish, abdomen j^ellow, destitute of 

 brown markings, otherwise as in the male; length, 2.5 mm. 



A specimen of each sex. 



Ilahltat. — Riverton, New Jersey (April oO, C. \s . Johnson); and 

 Boston , iVIassachusetts. 



Tij2Je.—OAi. No. 5400, U.S.N.M. 



Family EMPIDID.E. 



EMPIS TRIDENTATA, new species. 



Head black, gray pruinose, front of male at narrowest point less 

 than width of lowest ocellus; antenna' black, the first two joints yellow, 

 Proc. N. M. vol. xxiii 80 



