88 cicadid.t;. 



a. Opercula long-, at least reaching centre, and 

 sometimes apex of abdomen. 

 b. Abdomen short, about as long as space 

 between apex of head and base of cruci- 

 form elevation. 

 a. Head as long as breadth between eyes. 

 «'. Opercula iu male broad, either just 

 or longly passing middle of ab- 

 domen, well separated and not 

 overlapping, more or less concavely 

 situate on each side at basal area, 

 their apices rounded or obliquely [p. 96. 



truncate Cosmopsaltria, 



aa. Head much shorter than breadtli 



between eyes. 



«-, Opercula in male broad, their inner 



margins contiguous, nearlj' equally 



broad throughout, their apices 



broad, the outer margins very obso- 



letely sinuate Haphsa, p. 99. 



bb. Abdomen considerably longer than space 

 between apex of head and base of cruci- 

 form elevation. 

 h. Head about as long as breadth between 

 eyes. 

 c. Pronotum measured centrally almost 

 as long as mesonotum excluding 

 cruciform elevation, its lateral mar- 

 gins alwaj'S distinctly, strongly, and 

 generally acutely toothed. 

 (i^. Opercula elongate, concavely sin- 

 uate on each side near base, their 

 apices rounded or obtusely acute, 

 occupyinglateral abdominal areas, 

 and always well separated at [p. 100. 



their inner margins Platylomia, 



li. Head distinctly shorter than breadth 

 between eyes. 

 cc. Pronotum measured centrally dis- 

 tinctly shorter thau mesonotum, its 

 lateral margins moderately dentate, 

 a'. Opercula obliquely divergent. 



sometimes very short Meimuna, p. 107. 



aa. Opercula always short and transverse. 



d. Abdomen in male longer than space 



between apex of head and base of cruci- 

 form elevation. 

 d. Tympanal coverings of normal shape 



and size Pomponia, p. 111. 



e. Abdomen in male short, about as long 



as space between apex of head and base 

 of cruciform elevation. 

 cV . Tympanal coverings of normal shape 



and size Aola, p. llo. 



d-. Tj'mpanal coverings very globose and 

 projecting beyond the lateral margins 

 of the abdomen. 



