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 tnmcate behind 4 Signorctia 



5a Pronctum angularly emarginate behind (6) 



6 \^ertex gently rounded in front ; frons subquadrate, truncate 



basally 5 Bathysinato pJionis 



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

 ly 6 Xcropliloea 



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 Aglena 



9a Ocelli distinct 9 Uselina 



10 Tegmina apically subsinuately truncate 10 Jafdr 



loa Tegmina apically more or less rotundate (11) 



11 Pronotum extending farther laterally than the tegmina, 



which arch outwards beyond the subaparllel basal fifth 



II Peiithimia 



na Pronotum not extending farther laterally than the tegmina, 

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



12 Scutcllum distinctly wider than the head.. 12 Pciifliimidia 

 12a Scutellum not wider than the head ( i.^"* 



13 Anterior margin of vertex in ])rofile acute or subacute; 



frons basally excavated (14) 



13a \^ertex not acute in profile, sometimes bluntly keeled; frons 

 not excavated (^5) 



14 Head laminate ; tegmina hyaline 13 Thaumatoscopus 



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

 ous ramose '"false" veins 14 Viiltiinius 



15 A^ertex declivous, sufficiently elongate 15 Gypoiia 



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



16 Pronotum transversely striate t6 Scans 



1 6a Pronotum not striate i? Ztnncca 



18. Ncodartns, I do not know. 



Vulturnus. 



Dififers from Tliaumatoscopus principally as follows: vertex 

 more declivous; clavus and the subcostal cells with numerous 

 transverse veins and usuallv the entire tegmen with numerous 



