126 ORIENTAL CICADID^. 



Var. a, amussitata. (Tab. XII., figs. 16, a, h.) 



Tiblcen (imussitatHs, Dist. Ann. Mag. Nat. Hist. ser. 6, vol. i. p. 373 (1888) ; Ann. Mus. Civ. Genoa, ser. 2a, 

 vol. vi. p. 392 (1888). 



Tegmina almost unspotted, or with only faint traces of the marginal spots ; sometimes with a single 

 apical spot. 



Hab. — Continental India: Karwar and Darjeeling (coll. Dist.) ; Naga Hills (Doherty — coll. Diat.). 

 Burma (Bingham — coll. Dist.). 



2. Rustia tigrina. (Tab. XIV., figs. 19, a, h.) 



Tibicen tiijriaus, Distant, Ann. & Mag. Nat. Hist. ser. G, vol. ii. p. 325 (1888). 



Ochraceous ; a transverse fascia between the eyes, a broad marginal fascia to pro- and mesonotum, a 

 spot on each side of basal cruciform elevation, and two longitudinal dorsal fascise on abdomen, dark 

 castaneous or blackish. Body beneath and legs ochraceous ; apex of abdomen spotted with black. 



Tegmina and wings pale hyaline, the first with the costal membrane and basal area of venation 

 ochraceous, remaining venation and an apical spot fuscous ; wings with the venation fuscous. 



The rostrum just passes the intermediate coxfe ; the anterior femora are armed beneath with four 

 spines— two central long and prominent, one short and obscure near base, and one short placed just in 

 front of the apical longest spine. 



Long. excl. tegm. ^ , 13 millim. Exp. tegm. 31 millim. 



Hab. — Continental India : Kulluur (coll. Atkins, and coll. Dist.). 



Genus KARENIA. 



Karenia, Distant, Ann. Mus. Civ. Genoa, ser. 2a, vol. vi. p. 457 (1888). 



Head depressed, rounded, somewhat narrower than the anterior margin of the pronotum. Pronotum 

 more than twice as broad as long, widened posteriorly, the lateral margins ampliated and obscurely 

 toothed. Mesonotum somewhat large, the cruciform basal elevation elongated. Abdomen short and 

 robust, about equal in length to that of pro- and mesonotum combined. Anterior femora strongly toothed 

 beneath. Eostrum slightly passing the posterior coxae. Opercula small and widely separated. 



Tegmina with the basal ulnar area slightly ampliated anteriorly, the base distinctly narrower than 

 apex ; apical areas eight. 



The principal characteristics of this genus are the following : riz. the tympana are altogether 

 uncovered and exposed; the lateral areas of the basal cruciform elevation to mesosternum are much 

 narrowed, their margins oblique ; the basal cell of tegmina is about twice as long as broad with the 

 ulnar veins emitted at its extreme apex. 



Karenia bas a superficial resemblance to tbe Tropical American genus Paclujsaltria, Stal. 

 Two species are at present alone recorded, botb being found in our faunistic area. 



1. Karenia ravida. (Tab. XII., figs. 6, a, h.) 



Karenia ravida, Distant, Ann. Mus. Civ. Genoa, ser. 2a, vol. vi. p. 458 (1888). 



S . Head, ]3ronotum and mesonotum olivaceous. Head with a curved spot near the base of the antenna;, 

 the area of the ocelli, and a lineate spot on each side of the same, black. Pronotum with two central 

 obconical spots starting from anterior margin, between which is a very indistinct central longitudinal line 



