4 ORIENTAL CICADID.E. 



of the subject which was well separated by Burmeister under the name of "Partial 

 Orismolog)'." 



Fig. 1. General structure of Pomponia imperatoria. 



SYNOPSIS OF GENERA. 



1. Lateral margins of the pronotum ampliated and more or less angularly produced. 

 a. Tegmina with eight apical areas. 



b. Expanse of head, including eyes, broader than mesonotum. 

 bb. Expanse of head, including eyes, not broader than mesonotum. 

 aa. Tegmina with the venation dense and furcate, the apical areas numerous, but 

 small and irregularly formed. --.--.. 



2. Lateral margins of the pronotum convex, but not angularly produced. 



A. Tegmina and wings more or less opaquely coloured. 



c. Lateral margins of the pronotum somewhat convex but even. 



d. Head, including eyes, equal in width to anterior lateral margins of pronotum. 

 dd. Head, including eyes, narrower than anterior lateral margins of pronotum. 

 cc. Lateral margins of the pronotum anteriorly subampliated and somewhat toothed. 

 AA. Tegmina and wings either totally or partially hyalme. 



B. Lateral margins of the pronotum more or less distinctly toothed. 



('. Second and third ventral segments in male with distinct lateral tubercles 

 ec. Ventral' segments without tubercles. 



/. Opercula long, generally reaching beyond middle of abdomen. 



(■/. Head with the front large and convex, about twice as broad at base 

 as anterior margins of the lobes of vertex. 

 h. Eostrum scarcely reaching the posterior coxs. 

 grj. Head with the front not twice as broad at base as anterior margins 

 of the lobes of vertex. 

 hli. Eostrum reaching, sometimes slightly passing, the posterior cosas. 

 ff. Opercula long, at least reaching centre and, sometimes apex, of abdomen. 

 fff. Opercula short and transverse. 



i. Interior ulnar area normal. . - - - - 



ii. Interior ulnar area broad and beyond base distinctly ampliated. 

 BB. Lateral margins of the pronotum not toothed. 



k. Metasternum elevated at middle and furnished with a posterior 



process turning backwards. - - - - - 



A7i. Metasternum not, or very slightly, elevated, but not pro\'ided 



with posterior process. . . - - - 



pcecil0ps.\ltuia. 

 Platypleura. 



polyneura. 



Tacua. 



Graptopsaltria. 



Tosena. 



Leptopsaltria. 



DUNDUBIA. 



Cosmopsaltria. 



Pomponia. 

 psithyristria. 



Cryptotympana. 

 Cicada. 



