1923] The Fulgorid^ of Eastern North America 161 



135. Frons not greatly narrowed between the eyes ; median tooth of the male 



pygof er nearly as long as the pygof er ; clypeus usually paler than the 



frons 571 0. quinquelineatus Say 



Frons much narrowed between the eyes; median tooth of the male pygofer 

 shorter than the pygofer 573 .....' 136 



136. Size smaller, less than 5 mm 137 



Size larger, 8-10 mm 138 



137. Genital styles of the male longer than the ventral sinus; anal segment 



hood-like 572 0. texanus Metcalf 



Genital styles of the male barely equalling the ventral sinus ; anal segment 

 not hood-like 573 0. vittatus Metcalf 



138. General color blackish, polished; male plates very slender basally, the apices 



strongly recurved and ridged so as to appear coiled 574 0. vitreus Metcalf 



General color tawny ; male plates broader basally, their apices broad and 



flat 575 0. vicarius Walker 



139. Frons as broad as long or broader 279 140 



Frons longer than broad 285 142 



140. Vertex short, transverse, about four times as broad as long 278 



Monorachis sordulentus Uhler 

 Vertex elongate, about one and one-half times as broad as long 280 



Genus Microledrida Fowler 141 

 MICROLEDRIDA 



141. Color light testaceous yellow; male genital styles not produced into a long 



reflexed process at the apex 576 Microledrida flava Metcalf 



Color fuscous ; male genital styles produced into a long reflexed process at 

 the apex 577 M. asperata Fowler 



142. Posterior margin of the pronotum broadly rounded; fore Avings nearly 



vertical 282 Ciocixius dorsivittatus Van Duzee 



Posterior margin of the pronotum deeply notched; fore wings not vertical 

 284 Genus Cixius Latreille 143 



CIXIUS 

 148. Wings with the basal half infuscated, apical half milky hyaline, more or 

 less marked with fuscous ; median tooth of male pygofer longer than its 



basal width 78, 578 Cixius apicalis Metcalf 



Wings more or less marked with fuscous but not with basal and apical 

 areas distinctly different in color; median tooth of male pygofer shorter 

 than it basal width 582 144 



144. Vertex longer than basal width, veins impunctate 286 C. cultus Ball 



Vertex shorter than basal width, veins punctate 289 145 



145. Frons and clypeus black with pale carinse 146 



Frons dark, clypeus distinctly paler 148 



