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Front flat, or slightly convex ; more or less impressed across 

 the base beneath the prominent and acute, or roimded and 

 overhangino- anterior edge of the head ; cheeks at least 

 moderately expanded Snbfamil)- Gypou'uia Stal. 



Family Jassidac. 



( )celli placed superiorly close to the anterior t(\^Q of the head, 



Subfamily Acocephal'ma. 



Ocelli on the anterior edge of the head, or wanting (a.) 



a. First sector of the elytra forked near its base, the iimer 

 branch generally united to the second sector by one or two 

 fransverse nervures, usually one or both branches of the 

 hrst sector are again forked, forming two or three anti- 

 apical areoles ; supernumerary cell present in the wings ; 



ocelli present Subfamily Jassiiia. 



First sector of the elytra forked close to its base, thus form- 

 ing apparently three sectors, which run straight and un- 

 divided to the angular nervures separating the four apical 

 areoles ; no transverse nervures between the first and second 

 sectors ; wings without a supernumerary cell ; ocelli usually 

 wanting Subfamily I'ypliiucybtiui. 



Tribes oi the Jassiiia. 



Anterior edge of the head thinaf and sharp, or more or less 

 foliaceous / Dorydini. 



Anterior edge of the head sometimes acute, but generally 

 obtuse or rounded, never thin and foliaceous (a.) 



a. Elytra with two transverse nervures l~)etween the first and 



second sectors of the corium Dcltoccphalnii. 



Elytra with but one transverse nervure between the first 

 and second sectors of the corium (b). 



b. Elytra without a series of antiapical areoles, or with but 

 one formed by the forking of the outer branch of the first 

 sector, vertex subquadrate, hind and lateral margins ele- 

 vated, before feebly arcuated, with the edge strongly round- 

 ed, or jiroduced and tumid before with an obtuse apex. 



lassiii'i. 



Elytra with a series (generally three) of antiapical areoles. (c.) 

 c. Outer branch of the fir.st sector of the elytra with two 



iorks evident Afhysoiiini. 



Outer hranch of the first sector, of the elytra with its outer 

 fork ol)solete, or nearly so; anterior edge of the head well 

 rounded, vertex but little if at all longer on the middle than 

 next the eye Cicadiiliiii. 



