90 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



8. Vertex not strongly produced, often angled, face broader propor- 



tionately. (Fig. ii, i, 2, 3.) 9 



Vertex strongly produced and acutely angled, front very long and 

 narrow. (Fig. 9, 13a, b.) Platymetopius, p. 100 



9. Elytra usually with many supernumerary veinlets along costal 



margin Mesamia, p. 94 



Elytra with reflexed veinlets at apex of costal area but without 



supernumerary veinlets along costal margin. (Fig. 11, 5.) 



Deltocephalus, p. 104 



10. Elytra without costal recurved veins. (Fig. 10, 4 and 5.) II 



Elytra with recurved veins on costal margin. (Fig. 9, 5.) 



Scaphoideus, p. 95 



11. Elytra marked with fine brown ramose pigment lines Phlepsius, p. 125 

 Elytra usually subhyaline, without ramose pigment lines or areas, 



often with bright color markings Thamnotettix, p. 133 



12. Inner branch of first sector forking on disc of corium. (Fig. 10, 



9 and 2. ) 13 



Inner branch of first sector not forking on disc of corium. (Fig. 

 10, 8.) 20 



13. Elytra greatly narrowed and acutely pointed at apex. (Fig. 9, 6.) 



Acinopterus, p. 133 

 Elytra scarcely narrowed, broad and rounded at apex. (Fig. 9, 

 7 and 10.) 14 



14. Elytra short, not exceeding abdomen, often very short, covering 



only basal portion, head short and broad. (Fig. 10, 1.) 15 



Elytra longer exceeding abdomen in length 17 



15. Head broad, ovipositor short, elytra usually extending to ovipositor. 



(Fig. 10, 6.) Euscelis, p. 117 



Head narrower, ovipositor long, elytra usually extending only to 

 second abdominal segment 16 



16. Vertex bluntly rounded, almost parallel margined, female abdomen 



abruptly narrowed posteriorly, ovipositor only a little longer than 



abdomen Driotura, p. 1 17 



Vertex more conical, bluntly but decidedly produced at middle, 

 female abdomen gradually narrowed, last visible dorsal segment 

 very long, ovipositor extremely long Aconura, p. 116 



17. Elytra with one cross nervure between first and second sectors 



(Fig. 10, 3.) 18 



Elytra with two cross nervures between first and second sectors . . 



[Aligia] 



18. Elytra marked with ramose pigment lines 19 



Elytra without markings in the form of ramose pigment lines 20 



19. Ramose lines on elytra in the form of bands or saddle areas,_ pig- 



mentation of various colors Eutettix, p. 122 



Ramose lines on elytra not restricted to bands, often quite uni- 

 formly inscribed, some shade of brown Phlepsius, p. 125 



20. Pronotum with sides short, usually with dark or bright markings 



Thamnotettix, p. 133 

 Pronotum with sides longer, usually a uniform green or greenish 



yellow, vertex broadly rounded or roundingly angulate 



Chlorotettix, p. 138 



21. Vertex angularly, conically produced, eyes small, quite remote. 



(Fig. 10, 14.) 22 



Vertex broadly curved, parallel margined, eyes large, close to- 

 gether, almost as long as pronotum. (Fig. 10, 15.) . . Jassus, p. 141 



22. Clypeus not tuberculate, elytra rather short and broad. (Fig. 10, 



14.) Neocoelidia, p. 142 



Clypeus strongly and conspicuously tuberculate, elytra longer and 

 narrower Paracoelidea, p. 142 



