664 MONOGRAPH OF THE AUSTRALIAN CICADID.E, 



"^Cystosoma schmeltzi, Dist. 



1882. Proc. Zool. Soc. Lond. p. 132. 



Pea green. Lateral borders of pronotum diverging, not- 

 dentate; posterior angles rounded, prominent; hind border lightly- 

 sinuate, very lightly produced backward on each side. Tegmina 

 pea green, opaque, costa white; interior ulnar vein straight; 

 interior ulnar area gradually narrowed from base to apex, which 

 is obtuse; venation irregular on less than apical half. Wings 

 vitreous, very delicate, veins white. Abdomen a little longer 

 than head and thorax, inflated in the male ; opercula small, 

 obscurely sinuated on interior and posterior margins. The 

 abdomen of the female is obconical; last ventral segment deeply 

 emarginate at middle, and lightly so on each side ; ovipositor 

 ferruginous. Long. corp. $ 25 mm.; 9 21mm.; exp. teg. ^ 

 62 mm , 70 mm. 



Hah. — Gayndah, Queensland (Distant) ; Townsville, Port 

 Denison, Q. 



Genus Tettigarcta, White. 



1845. App. Eyre's Travels in Aust. i. p. 412. 



Head very small; front destitute of a longitudinal sulcus, not 

 prominent anteriorly; vertex very narrow, occupied by ocelli; 

 clothed with long black hairs; front ocellus placed vertically on 

 the posterior side of a depression on base of front. Pronotum 

 long and broad, produced posteriorly, almost covering mesonotum, 

 convex and wrinkled; lateral borders flattened out, nearly hori- 

 zontal, front angles directed toward centre of eyes. Mesonotum 

 small, posteriorly produced in a triangular process; "cruciform 

 elevation" in the form of a narrow ridge anteriorly broadened in 

 an elevation. Tegmina semi-opaque; basal area four or five times 

 as long as broad; two ulnar veins, distant; radial vein anastomoses 

 with first ulnar vein at apex of basal area widely distant from 

 costa, thus forming a broad costal area; interior ulnar area 

 suddenly very much broadened near its apex; with an elevated 

 line across middle; eight apical areas. Wings vitreous, with 

 seven apical areas. Opercula obsolete. Front femora with a 



