482 



ARTHROPODA. 



Sub Order I. PLANIPENNIA. Biting mouth parts. Sialid^, wings 

 well developed, mouth not rostrate, larvae aquatic, commonly called dob- 



Fig. ^-}\\.~CoiiidaU^ romuius,* hellgraruniite. male. (From Rilev.) 



Fin. r,\Z—Plin/,i,ni,;i ,irin„l;s. iFn.ni Schmarda.) 



sons. Corydalia* Jiellgrnniniite ; t^inlh.* 11k.merobiid.i-;, lace wings; 

 wing.s well developed, uiuuth not rostrate; larv;e with sucking moutli 



