9. P. rujicincta. 



PTYCHOPTERA. 



in. ; black : body with reddish bands ; feet reddish ; wing with 



a brown spot near shoulder, and three brown bands. 



BITTACOMORPHA. 



10. B. clavipes. T ! k in. ; black; front of head white ; chest with white 

 stripe in middle, and sides white ; wing transparent. 



Family 6. RHYPHID/E. Strap Midges. Like Tipulids, without 

 the V-shaped seam on chest-part. 



DILOPHUS, Ray Midge. 



1. D. tlioracicus. ]^ in. ; horny yellow ; body and legs black ; wing smoky. 



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



RHYPHUS. Strap Midge. 



3. R. alternatus. ^ in. ; brown ; three stripes, with three brown and three white spots. 



4. R. marginatus. T 3 ff in. ; gray, with three reddish stripes ; body brown with whitish edges. 

 15. R. scalaris. % in. ; honey yellow ; bands and tail-end black. 



Family 7. BLEPHAROCERID/E. Net-Winged Midijes. Like mosquitoes, their larv;c live in swift- 

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



Family 8. HYCETOPHILID^E. Fungus Gnats Their larvae feed on fungi, decaying vegetable matter, 

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

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



(20) 



