662 MONOGRAPH OF THE AUSTRALIAN CICADID^E, 



rostrum reaching apices of middle coxae; tegmina much wrinkled. 

 Long. Corp. $ 40 mm.; exp. teg. $ 90 mm. 



ZTa^. — Queensland; described from one example, a male, pre- 

 sented by Mr. Charles French (Coll. G. & F.). 



Genus C y s t o s o m a, Westw. 

 1842. Arc. Ent. p. 92. 

 1866. Stal, Hemip. Afric. iv. p. 3. 



Head small, triangular, as long as wide, front border emargi- 

 nate on each side, and produced in a foliaceous short process in 

 front of eyes; front prominent, laterally compressed; eyes small, 

 directed obliquely backward; ocelli distant from base, equidistant 

 from each other and eyes. Pronotum rather small, convex, much 

 wider at base than at apex; front border straight; lateral borders 

 dentate in front of middle, sinuate, widely diverging backward, 

 front angles produced below eyes; posterior border sinuate, hind 

 angles very prominently produced, almost foliaceous. Mesonotvm 

 convex, rather small, not covering scutellum. Tegmina opaque, 

 convex exteriorly when closed, tips reaching apex of abdomen; 

 basal area more than twice longer than broad; the two ulnar 

 veins approaching each other, almost contiguous, diverging; 

 interior ulnar area with base broader than apex; costa and radial 

 vein contiguous; postcostal marginal space obsolete; apical half 

 with venation irregular, forming many areas. Wings vitreous, 

 with nine apical areas which are sometimes divided by transverse 

 veins. Abdomen in male inflated, the genital apparatus below at 

 apex; opercula short, widely separated, posterior inner angle 

 rather acute. Mesosternum somewhat elevated. Front femora 

 spined below. 



Type, C. saundersii, Westw. 



Synopsis of Species. 



1 (2). Abdomen enormously inflated; posterior border of pro- 

 notum on each side produced backward, covering front 

 angles of mesonotum; interior ulnar vein strongly 

 curved saunderm. 



1 (1). Abdomen moderately inflated; posterior border of pro- 

 notum very lightly sinuate ; interior ulnar vein straight scJuneltzu 



