122 CICADIDiE. 



margins also iufuscated ; ruesonotum with two small central 

 obconical spots, some subobsolete fasciae on each side, and with 

 two small blackish spots in front of the cruciform elevation, the 

 centre of which is dark fuscous ; body beneath and legs dark 

 ochraceous ; apex of rostrum and tarsal claws fuscous ; apical area 

 of abdomen castaneous ; tegmiua and wings hyahne, with a shght 

 bronzy tinge and unspotted, the venation darlv ochraceous. 



Length escl. tegm., d" , 27 ; exp. tegm. 75 milHm. 



Eab. Assam ; Margherita (Dohertij). 



Subfamily II. G^I^ANIN^. 



Gfeanina?, Disf. A. M. N. H. (7) xv, p. 304 (1905) ; id. ante, p. 57. 



This subfamily includes a number of genera in which the tympanal 

 orifices are more or less exposed, the tympanal coverings being 

 always present, but in a more or less incomplete condition. 



Division CICADATRARIA. 

 Cicadiitraiia, Uist. A. M. N. H. (7) xv, p. 304 (1905). 



In this division the tympanal coverings are rounded anteriorly, 

 not angulate, and either comi)letely covering the orifices anteriorly 

 and exposing them interiorly or the reverse, or smaller, exposing 

 them both anteriorly and interiorly ; the lateral margins of the 

 pronotum are not convexly ampliate nor medially angulate ; the 

 tegmiua and wiugs are hyaline, sometimes maculate. 



The genera composing this division are confined to the Eastern 

 Hemisphere. 



Stjnojisis of Genera. 



1. Abdomen in c? not tubeiculate beneath. 



A. Tympanal coverings narrower, but scarcely 



shorter tlian tympanal cavities, 

 a. Head abont as long as pronotum ; lateral 

 margins of pronotum straight, not 

 ampliate E.mathia, p. 123. 



B. Tympanal coverings both narrower and 



shorter than tympanal cavities. 



a. Wings with live apical areas Rustia, p. 1'2-i. 



b. Wings with six apical areas. 



a. Opercula in J short and transverse, not 

 or scarcely extending beyond base of 

 abdomen. 

 a'. Head more or less deflected anteriorly, 

 front not prominent. 

 a-. Pronotum distinctly shorter than 

 mesonotimi. 

 b'. Length of head about equal to 

 breadth between eyes ; abdo- 

 men in c5' longer than space 

 between apex of head and base 

 of cruciform elevation. 



