PTYCHOPTERA. 



q. P. ru/icijicia. ^% in. ; black : body with reddish bands ; feet reddish ; wing witii 

 a l)rown spot near shouitler, and tliree i)rown bands. 



BITTACOMORPHA. 



lo. />. clavipes. -^-^ In. ; blacl< ; front of head white ; chest \\ itii wiiite 

 stripe in middle, and sides white; wing transparent. 



Family 6. RHYPHID/C. Strap Midges. Like Tipulida, without 

 the V-shaped seam on chest-part. 



DILOPHUS, Ray Midge. 



1. Z>. thoracicus. '^ in. ; horny yellow; body and legs black ; wing smoky. 



2. D. orbatus. y^ in. ; shiny black with green smoky wings. 



RHYPHUS. Strap Midge. 



1,. /?. alternatus. J2 in. ; brown : tliree stripes, with three brown and three white spots. 



4. R. marginatus. ^\r in. ; gray, with three redtlish stripes; body brown with whitish edges. 



T. R. scalaris. ^4^ in. ; honev vellow ; bands and tail-end black. 



Family 7. BLEPHAROCERID/E. .\et-iciiiged .Midges. Like mosquitoes, their larva? live in swift- 

 Howing streams and are there easily seen, as they are a conspicuous black. 



Family 8. nVCETOPHILID/E. Fungus Gnats Tiieir larva' feed on fungi, decaying vegetable matter, 

 and some upon ripe fruit. They live often in great numbers together. In the venation of tlie wing there is often 

 much variation. They appear like short-legged, strongly-built mosquitoes. 



(20) 



