REPORT OF THE SOCIETY Vl 



EE. — Cornicles very short, shorter than cauda, sHghtly con- 

 stricted at base. — Hyalopteris. 

 CCC. — Cauda very short and rounded. 



D. — Antennae with five joints. — Lachnus. 

 DD. — Antennae with six joints. 



E." — Antennae longer than body, never hairy. — Myzocallis. 

 EE. — Antennae shorter than body and hair>'. 



F. — Cornicles swollen or vasiform, cauda broadly rounded. 



• — Melanoxantherium . 

 FF. — Cornicles tuberculate, cauda knobbed. — Chaitopho- 

 rus. 

 BB. — Third discoidal vein of front wings once forked or simple. 

 C. — Third discoidal vein simple. 



D. — Hind wnngs w'ith two discoidal veins. — Pemphigus. 

 DD. — Hind wings with but one discoidal vein. 

 E. i\ntennae 6-jointed.- — Tetraneiira. 

 EE. — xA.ntennae 5-jointed. — Hamamelistes, 

 CC. — Third discoidal vein forked. 



D. — Hind wings wdth two discoidal veins. — Eriosoma (Srhizoneura). 

 DD. — Hind wrings with one discoidal vein. — Colopha. 

 AA. — Front wings with two discoidal veins; antennae never more than Srjointed. 

 B. — Antennae 5-jointed. — Chcrmcs. 

 BB. — Antennae 3- jointed. — Phylloxcrn. 



