14 Illinois State. Laboratory of Natural History. 



Ocelli situated upon the disk of the vertex Tettigonin^. 



Ocelli situated on the front or near the front margin of the 

 head Jabsin^. 



SUBFAMILY TETTIGONIN^. 



Two very natural groups of genera can be distinguished 

 as follows: 



Body broadly oval flat Tribe I. Gyponina. 



Body more or less cylindrical Tribe II. Proconixa. 



Tribe I. Prooonina Stal. 



Q-ENUS 1. Onoometopia Stal. 



Proconia Am. and Serv., Hist, des Hemip., p. 571 (1843). 

 Oncometopia Stal, Hemip. Fabr. Part II., p. 62 (1869). 



Somewhat cylindrical, with head and anterior parts of the 

 thorax bent downwards at an angle of about 15°, or more. 

 Head with prominent eyes extending laterally beyond the sides 

 of the head. A faint groove behind each ocellus. Ocelli sit- 

 uated on feeble nodules, farther from each other than from the 

 eyes. Vertex not attaining the front margin. Front very 

 convex, with the usual striations extending over the front mar- 

 gin on to the top of the head. Genae projecting outwards and 

 forwards beyond the margin of the head. Clypeus convex and 

 not entirely separate from the front, extending beyond the 

 margin of the side of the head. Lore rather small but distinct. 

 Pronotum with its sides inflexed, surface irregularly wrinkled 

 l)y transverse striations formed of coarse punctures. Scutellum 

 triangular, with a depressed transverse line about the middle. 

 Beneath, the coxa> are very large and the mesothoracic epi- 

 sterna are large and flat. Elytra with the apical and anteapical 

 cells remarkably uniform in size. The anterior sector is forked 

 about the middle, and a third fork is given off towards 

 the apex. A narrow apical membrane is present. Claval 

 veins two, sometimes united by one or two cross-veins. 

 First sector of the wing giving off a faint marginal fork, |)oste- 

 rior fork connected with the anterior fork of the second sector 



