HETEROMYIA. 



I. H. fasciata. j% in. ; greenish; wing witii brown bands. 



SaOPHILA. Shade Gnat. 



1. 5". bifasciata. i/% in. ; brownish yellow with black lines, with two blackish bands. 



2. S. fasciata. ^ in. ; yellowish ; with three stripes ; body with brown bands. 



MYCETOPHILA. Fungus Gnat. 



1. ,1/. sericea. -^^ in. : brown, with whitish-silky bloom ; bod\' yellow-edged. 



2. J/, tnaculipennii. ^V in. ; yellow, with three striped wings with three brown spots. 



SQIAUA. Mourning Gnat. 



I. S. fulviventris. i/%\\\.\ black; waist yellow, hairy. 



Family 9. CECIDOMYID/E. Qall Gnats. Small, often very small flies, which cause the curious out- 

 growth on manv plants, as on the willow, blueberry, etc. Some kinds are very injuiious to the crops. 



niPLOSis. 



1 . D. inaccus. }s in. ; yellowish ; chest reddish-striped ; legs and feelers black-banded ; wing with violet spots. 



2. D. carrya. Pale, with gray and black stripes. On hickory trees. 



(31) 



