ORDER DIPTERA 



135 



Family Orphnephilidie. -Orj R .'lie 



Famil) Chironomidit. Bod} verj slender; antenna plun 

 larvae aquatii blood red A 



topogon is tb( midge, th< S Harris. Tanypua 



annuluttu Say, I riundus Fitch. 



(family Culioids, In 1 1 1 • - mosquitoes the f< males have the mouth 

 parts \it\ long and slender, and highly developed, while the mandi- 

 bles of the males, ending like a paddle, are uol adapted for piercing; 

 those of the females are perforated at the end for the exit of the 

 on, tlic openiug connecting, according to Met loskie, with a 

 duel leading from the poison-glands in the prothorax. The « 



Kk; 163 4, larva; B, pupa; a, end of B of m 

 and mouth-parts of mosqu antenna ibrum; A, hyp 



rynx; r», mandibles; ma;, maxilla?; mxp, m '■. labiun 



crj peus. —After Dimmock. 



are fringed, and the veins covered with scales. The larva' arc 

 aquatic, breathing by a respiratory tube (e) at the end of the body 

 and bearing a tufl oi bristles, while the pupae areaided in swimming 

 by two broad thin paddle-like caudal appendages, and respire by two 

 thoracic tub. Hie larva of ( urethra is beautifully transparent, 



thus escaping destruction by its enemies, and when quiet rests in a 

 horizontal position. Culex ciliatus Fabr. 



Family Blepharoceridae. -Body long and slender, like a large mos- 

 quito in general appearance; wings broad, but naked. The larva' 

 are of remarkable shape, and at first do not look like those of a fly, 

 since the bod) is divided into six divisions somewhat lik \ ■■ llus. 



or water sow-hug. They adhere to smooth rocks in swift streams 



\ suckers arrauged in a line along the under side of l 

 and breathe by live pairs of filamental gills, The pupa? an flat be- 

 neath, with two Bets >>\' club-shaped breathing append: 

 ( .n the thorax. There arc. moreover, two kinds 

 being like the male, not sucking blood. Blep) A -' 



3 is native to this country, and Paltmtoma I Muller to 



il. 



Family Bibionidae. — Prothorax much developed; "' :» 



discal cell; coxa; not prolonged. Larvae cylindri n injuring 



lawns from feeding on the root- of grass 



FaiuiU Simulidae. —Body short and thick; head bent under the 



