13Y F. W. CODING AND W. W. PROGGATT. 571 



The Green Cicada is common all over Southern and Eastern 

 Victoria, and ranges as far north as Brisbane; we have had no 

 specimens from Western Australia. 



Genus T h o p h a, Am. et Serv. 

 1843. Hemip. p. 471. 

 1866. Stal, Hemip. Afric.-iv. p. 6. 



Head short, broad, equal in width to apex of pronotum; eyes 

 more or less pedunculated, prominent; ocelli four times more 

 distant from eyes than from each other; apex of clavus acuminate; 

 front destitute of a longitudinal sulcus. Pronotum with sides 

 convex, widened forward. Tegmina vitreous, basal area not 

 twice longer than broad; interior ulnar area broadened towards 

 a,pex; ulnar veins distant at base. Wings vitreous, with six 

 Apical areas. Opercula short, transverse. Sides of abdomen in 

 male with well developed sacs. 



Type, Tettigonia saccata, Fabr. 



Synopsis of Species. 



1 (2). Eyes lightly sessile; body pilose above, not glabrous; head, 

 sternum, and opercula dark castaneous beneath; abdo- 

 men very little attenuated saccata. 



:2 (1). Eyes strongly sessile; body glabrous above, not pilose; 

 head, sternum, and opercula ochraceous beneath; abdo- 

 men attenuated sessiliba. 



Thopha saccata, Fabr. (Plate xviii., figs. 1-5). 



1803. Tettigonia id., Syst. Rhyng. p. 35. 

 1843. Am. et Serv., Hemip., p. 471. 

 1895. Frogg., Proc. Linn. Soc. N.S.W., p. 528. 

 1903. Frogg., Agr. Gaz. N.S.W., p. 340; and Misc. Pub. No. 643, 

 p. 7, pi. 2, fig. 3. 

 Head black, a line on front border, an irregular spot on base 

 of front, a stripe on each side, and two spots on vertex, yellow. 

 Pronotum ferruginous, anterior and lateral borders black. Meso- 

 notum yellow, with four obconical black spots, the outer pair 

 longer and excavated, between inner pair a long narrow stripe 



