78 cicadidjE. 



spots on disk of mesonotum pale ochraceous ; bod_y beneath and 

 legs black ; lateral margins of face, a wide central annulation to 

 femora, and a central discal series of subtriangular spots san- 

 guineous ; tegmina and wings (where not obscured by dark 

 markings) hyaline, exhibiting varied opaline lustre, which in some 

 lights is found to be ornamented with close and regular series of 

 transverse darker striae ; tegmina narrowly at base and with the 

 costal membrane shining black, venation bright flavescent, and for 

 two-thirds from base broadly margined with shining black, a series 

 of shining black marginal spots on apices of longitudinal veins to 

 apical areas, claval area pale greenish ; wings pale greenish, apical 

 third shining black, enclosing a submargiual series of pale opaline 

 spots. 



Length excl. tegm., d 45 to 47, $ 44 ; exp. tegm. d" & $ 122 

 to 127 millim. 



Hah. Assam; ]Naga and Khtisi Hills (Cheiinell). Lushai country 

 {Ind. 2his.). Burma; Akyab (Co/?. Bist.) ; Arakau Yoma. 



Division CICADARIA. 

 Cicadaria, Blst. A. M. N. H. (7) xiv, pp. 329 & 425 (1904). 



Lateral margins of the pronotum more or less convex but not 

 toothed ; tegmina and wings hyaline or clear as in many species 

 of the genus Cicada, or semi-opaque, as represented in the genus 

 Cri/ptoti/mpana ; head broad, and (including eyes) always a little, 

 and generally considei'ably, wider than the base of mesonotum. 



Synopsis of Genera. 



A. Metasternum not or very slightly elevated, and 



not provided with a posterior process ; length 

 of head more than half the breadth of space 

 between eyes ; face usually very prominent ; 

 lateral margins of pronotum without an anterior 

 lobe KiHANA, p. 78. 



B. Metasternum elevated at middle and furnished [p. 80. 



with a posterior process directed backward . . Cryptotympana, 



Genus RIHANA. 



Eihaua, Dist. A. M. N. H. (7) xiv, p. 42G (1904). 



Cicada, subgen. Chremistica, Stal (part.), OLfv. Vet.-AJc. Forh. 1870, 



p. 714, note. 

 Cicada, subgen. Cicada, Stal (part.), torn. cit. 

 Cicada, subgen. Diceroprocta, Stal (part.), torn. cit. 



Type, R. ochmcea, "Walk,, known at present from China and 

 Formosa. 



Distribution. Nearctic, Neotropical (including Antillean), and 

 Oriental (including Malayan) Eegions ; also found in Madagascar. 



