294 



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

 the base beneath the prominent and acute, or ro-unded and 

 overhanging- anterior edge of the head ; cheeks at least 

 moderately expanded Subfamily Gy/^olli)la Stal. 



Family Jassidac. 



( )celli placed sn])eriorly close to the anterior edge of the head. 



Subfamily Acoa'/^lialDia. 



( )celli on the anterior ah^t^ of the head, or wanting (a.) 



a. JMrst sector of the elytra forked near its base, the inner 

 f)ranch generall}- united to the second sector by one or two 

 r-ransverse nervures, usually one or both branches of the 

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

 apical areoles ; supernumerary cell present in the wings ; 



ocelli present Subfamily Jassiiia. 



Vh'st 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 Sul)lamily T ypliiucybma. 



Tribes oi the Jnssina. 



Anterior edge of the head thing and sliarp, 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 between the first an(i 



second sectors of the corium Dcltoccplialini. 



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 bv 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 produced and tiunid before with an obtuse apex. 



iassiii'i. 



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

 c. Outer branch of the first sector of the elytra with two 



forks evident Afhysaniiii. 



Outer branch of the first sector of the elytra with its outer 

 fork obsolete, or nearly so ; anterior edge of the head well 

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

 next the eye Cicadidini. 



