74 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BulL 



6. Vertex broad and pointed, reflexed portion of front elevated on 



disc and with conspicuous arcs. Pronotum more than twice as 



long as scutellum Helochara, p. 'jj 



Vertex more narrowed and bluntly angled, often conical, when 

 reflexed portion .occurs it is not elevated. Pronotum not more 

 than twice the length of scutellum 7 



7. Vertex subconically narrowed, lateral margins in a continuous 



line with the outer margins of the eyes Kolla, p. ^^ 



Vertex bluntly conical, lateral margins somewhat rounded not in 

 a definite line with the outer margins of the eyes . . Cicadella, p. 76 



Oncometopia Stal. 



Proconia Amyot and Serville. 



Head broader than pronotum, vertex rounding to front, obtuse, 

 front gibbous. Pronotum broadly rounded in front, anterior and 

 posterior margins almost parallel. Elytra narrow, lateral margins 

 of abdomen exposed. 



Key to Species. 



1. Vertex black, irrorate with yellow, size small, 8 mm 2 



Vertex orange with black markings, size large, 12 mm. or more undata 



2. Elytra red with black nervures lateralis 



Elytra shining black lateralis var. limbata 



O. undata (Fabricius). Cicada undata Yshvicms. Cicada or bona 

 Fabricius. Proconia nigricans Walker. (Fig. 7, i.) 



Ent. Syst., iv, 32, 1794. 



Very large, robust, vertex and scutellum orange-yellow, each 

 with a rather definite black color pattern. Pronotum orange- 

 yellow anteriorly, marked with black ; posterior portion darker, 

 often slaty blue. Elytra long and narrow, reddish to slaty blue, 

 apices yellowish subhyaline. Face bulbous, orange-yellow. 

 Length 13 mm. 



It has been reported for Massachusetts and should be found in 

 Connecticut. Common in old pastures on New England aster. 

 O. lateralis (Fabricius). Cercopis lateralis Fabricius. Cercopis 

 marginella Fabricius. Tettigonia striata Walker. 



Ent. Syst., Suppl., 524, 1798. 



Shorter and more robust than undata. Vertex black, margins 

 of reflexed areas, posterior margin and a few small spots yellow. 

 Pronotum coarsely striate and with numerous large yellow irrora- 

 tions. Elytra reddish, veins and linear areas, black. Length 

 7-8 mm. 



A very common form in low pastures and waste places on 

 grasses and herbaceous plants. 



O. lateralis var. limbata (Say). Tettigonia limbata Say. Tetti- 

 gonia septentrionalis Walker. 



Jour. Acad. Nat. Sci. Phila., iv, 340, 1825. 



Similar to preceding in structure, slightly smaller, black, shining, 

 with a few pale irrorations on vertex, pronotum and scutellum. 



