﻿8i 



4 Pronotum prolonged posteriorly (more or less as in the 



Cercopidae ) or at least distinctively longer than wide (5) 

 4a Pronotum wider than long (7) 



5 Pronotum medianly truncate behind 4 Signorctia 



5a Pronoitum angularly emarginate behind (6) 



6 Vertex gently rounded in front ; frons subquadrate, truncate 



basally 5 Bafhysinafophorits 



6a Vertex suljangular in front; frons longoval, produced basal- 

 ly 6 XcropJiloea 



7 Frons with a keel down the middle 7 Evacanthus 



7a I'rons without a longitudinal keel (8) 



8 Tegmen without an appendix (9) 



8a Tegmen with an appendix ( 10) 



9 Ocelli indistinct 8 Aglcna 



9a Ocelli distinct 9 Uaelina 



10 Tegmina apically subsinuately truncate 10 Jafar 



loa Tegmina apically more or less rotundate (11) 



1 1 Pronotum extending farther laterally than the tegmina, 



which arch outwards beyond the subaparllel basal fifth 



II PeiithiiJiia 



iTa Pronotum not extending farther laterally than the tegmina, 

 which arch outwards from the base, if at all (12) 



12 Scutellum distinctly wider than the head.. 12 Pciithiinidia 

 12a Scutellum not wider than the head (13) 



13 Anterior margin of vertex in profile acute or subacute; 



frons basally excavated ( 14) 



13a Vertex not acute in profile, sometimes bluntly keeled; frons 

 not excavated (15) 



14 Head laminate; tegmina hyaline 13 Thai(iiiatoscopus 



14a Head scarcely foliaceous ; declivous; tegmina with numer- 

 ous ramose "false" veins 14 Viiltitnins 



15 \"ertex declivous, sufficiently elongate 15 Gypona 



15a Vertex very short, forming one curve with the frons. . (16) 



16 Pronotum transversely striate 16 Scans 



1 6a Pronotum not striate 17 Zinne'ca 



I 

 18. Ncodartns, I do not know. 



Vitlfiiniits. 



Differs from Ti'icionafoscopiis principally as follows: vertex 

 more declivous ; clavus and the subcostal cells with numerous 

 transverse veins and usually the entire tegmen with numerous 



