140 NORTH AMERICAN ORMOSIA (dIPTERA) 



Holotype: cf ; Hazleton, Pennsylvania. May 18, 1913. 



Allotype: 9 ; Hazleton, Pennsylvania. June 29, 1913. 



Para types: 4 males and 4 females, Hazleton, Pennsylvania, 

 May, June, July, August, October. One male and two females, 

 Black Mountains, North Carolina, May, 1913 (Wm. Beuten- 

 mueller — collector. One female, East River, Connecticut, Sep- 

 tember, 1910. (Charles Ely— collector). 



In some specimens the basal joints of the antennae are but 

 slightly darker than the flagellum; the wings less densely pubes- 

 cent. The mesonotum is somewhat darker in some specimens 

 than in others. All material in the author's collection. 



Ormosia palpalis sp. n. (PI. X, fig. 6.) 



Fuscous; antennae fuscous, basal joints pale. The discal cell opens into 

 the second posterior cell. Veins six and seven diverging to the wing margin. 



cf , Length, 3.25 mm.; wing, 4.25 mm. 



Head and palpi blackish. Antennae slender, bent back they reach beyond 

 the insertion of the wings; first joint light yellowish fuscous, the following 

 four joints pale yellowish and like the first joint, incrassate; rest of flagellum 

 pale fuscous, joints elongate elliptical, about twice as long as wide, the whole 

 antennae densely pubescent, pubescence long and pale and interspersed with a 

 few long bristles. 



Thorax. Mesonotum grayish-fuscous with an ill-defined median fuscous 

 vitta and an obscure fuscous line on each side. Scutellum and metanotum gray- 

 ish-fuscous. Pleura fuscous with a grayish bloom. Halteres entirely whitish. 

 Legs slender; coxae yellowish-brown; femora and tibiae light fuscous, darker 

 at the tip; tarsi darker, outer joints blackish. Wings hyaline, a faintly darker 

 shade in region of stigma; pubescence very fine, inconspicuous; veins not 

 pronounced. The discal cell opens into the second posterior cell. Veins six 

 and seven diverge towards the margin of the wang. 



Abdomen fuscous, densely clothed with pale, rather short pile. Hypopyg- 

 ium rather small, concolorous. The upper appendages long, and ending 

 into a fine point; lower appendages much shorter and nearly straight. 



Holotype: cf ; Hazleton, Pennsylvania. October, 16, 1913. 



Paratype: d^ ; topotypic. September 14, 1915. 



Agrees with 0. flaveola Coquillett and 0. divexa Doane, in the 

 discal cell opening into the second posterior cell and veins six 

 and seven diverging. From the former, it differs in its grayish- 

 fuscous coloration and the elongate joints of the flagellum; from 

 0. divexa in the gray color of the mesonotum, the shorter hairy 

 vcstiture of the abdomen, wings hyaline with the stigma but a 

 shade darker, and the pubescence very fine and less dense. 

 Types in author's collection. 



