314 AMERICAN PSYCHODID^. 



jointed ; basal segment sliglitly longer and stronger than terminal one, wliich is 

 directed downward, clothed with scattered, short erect spinules; inferior pair 

 spreading horizontally, clothed to very tips with long bristling hair. Intromit- 

 tent organ small, spike-like. 



Hah. — Columbia, Missouri. Two males taken on laboratory 

 window November 8th. 



Psychoda bicolor Banks. 

 Psychoda hicolor Banks, Canadian Entomologist, XXVI, p. 333 (1894) ; 

 XXXIII, p. 275 (1901). 

 "Head and thorax yellowish-white, abdomen black, the former with white, the 

 latter with black hair; wings with black hair; most dense toward base and on 

 costa; fringe black and dark gray behind, where it is about three or four times 

 as long as the width of a cell; legs black, with black hair; antennsE slender, 

 slightly longer than breadth of wing, black, with whorls of dark gray hair; the 

 wings are broader than usual, very oblique behind, and acute at tip. The infe- 

 rior male appendages are 3-jointed, the basal joints nearly united, the second 

 joint tapering and curved upward, about as long as the first joint, at tip with a 

 shor't, recurved, pointed joint; superior appendages two-thirds as long; widely 

 separated, curved doward, slender at tip. Length of wing 2.4 mm." 



Hab.—Sea. Cliff, N. Y. 



Psyclioda nigra Banks. 

 Psychoda nvjra Banks, Canadian Entomologist, XXVI, p. 331 (1894) ; 

 Canadian Entomologist, XXXIII, p. 275 (1901). 

 " Black, with dark brown on the thorax and long black hair on the abdomen, 

 wings evenly and quite thickly covered with long black hair, and with a black 

 fringe, which on the posterior margin is about five times as long as the width of 

 a cell ; legs black, with very long black hair on outside of the tibise at base. 

 Antennae slender and a trifle longer than the width of the wing, clothed with 

 white and some black hair, giving them a grayish appearance; wings narrower 

 than in P. alternata, and very acute at tip, the posterior margin near tip being 

 almost concave. The ventral plate of the female is blackish, not much longer 

 than broad, broadest at base, and barely emarginate at tip ; ovipositor more than 

 twice as long as plate and slightly curved. Length of wing 2.1 mm." 



. Hab.—Setx Cliff, N. Y. 



Psychoda slO!>tSoni Williston. 

 Psychoda slossoni Williston, Entomological News, IV, p. 114 (1893) ; Banks, 

 Canadian Entomologist, XXVII, p. 324(1895); Canadian Entomolo- 

 gist, XXXIII, p. 275 (1901). 

 " Wings rather narrow, the upper surface clothed for the most jiart with rather 

 long, black hair, with one or two poorly differentiated bands or spots of whitish 

 hair; costa at the base with a large tuft of dense, long, black hair, beyond the 

 tuft of hair becomes gradually shorter and somewhat intermixed with whitish ; 

 on the posterior margin the hair is dense and long, black, except between the 

 termination of the sixth and seventh veins, and at the tip where it is white. 

 Body black, not shining; abdomen and scutellum clothed with long white hair, 



