48 C I C A D I D ^. 



ff. Anterior marfriiis of vertex of liead almost at 

 ri^'ht aiiglod to lrt)nt. 



a. (ireatt'st breadth of tegmina more than 



one-third of lenjrth Falinid. 



<j<j. Head (inchuliiif; eyes) only about two-thirds 



the breadth of base of niesonotum Saxcilu. 



ee. Head much shorter than breadth between eyes. 



Iih. Opercula in (J about twice broader at 



apex than at base, their inuer margins 



concave, widening to basal area, outer 



margins sinuate near centre, their apices 



broad and over!a])piug yli/rs/m. 



/i/i/i. (.)j)ercuhi in cT bruad, their inner margins 

 contiguous, nearly equally broad through- 

 out, their a])ices broad, the outer margins 



very obsoletcly sinuate Ilapltsa. 



(Id. Abdomen considi'vably longer than space between 

 apex of head and base of cruciform elevation. 

 i. liead (including eyes) about as wide or a little 

 wider than base of me.sonotum. 

 j. Head about as long as breadth between eyes. 

 k. I'ronotiim measured centrally almost as long 

 as niesonotum excluding criu-iform eleva- 

 tion, its lateral margins always distinctly, 

 strongly, and generally acutely toothed. 

 I. Opercula elongate, concavely siinuite .on 

 each side near base, their apices rounded 

 or obtusely acute, occupying lateial ab- 

 doniinnl areas, and always well separated 



at their inner margins Pldfi/lotia'a. 



jj. Head distinctly shorter than breadth between 

 eyes. 

 kli. Pronotum measured centrally distinctly 

 shorter than niesonotum, its lateral margins 

 moderately dentate. 

 //. Opercula elongate, broad, nearly met^ting 

 at their inner margins, sinuate at their 

 basal areas. 

 VI. Anal abdominal segment in S apically 

 acutely dentate or with a broad obtuse 



process on each side Direropi/i/a. 



III. Opercula obliquely divergent, sometimes 

 very short. 

 mm. Anal abdominal segment in (5* apj- 



cally unarmed ' Mciniumi. 



nil. Opercula short and transverse. 



;/. Head (includiiiii- eyes) about as wide as 



base of niesonotum, its length about or 



nearly equal to space between eyes. 



o. Abdomen in j longer than space 



between apex of head and base of 



cruciform elevation. 



2>. Tympanal covei'ings of normal shape 



and size l^oinpniiirt. 



jip. Tympanal noveriug.'i very large, 



nearly meeting inwardly ..... . . JJohunta. 



