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Family i Tetigoniidae. 



Subfamily i. Tetigoniinae- 



Tri'be i Tetigoniini. 



This is equivalent to the Tetiigoniinae of most authors, some 

 40 genera are now recognized, but the limits of some of these 

 are not sharply defined. 



Elongate, head produced in front of the eyes (apically round- 

 ed or triangular, sometimes irregularly linear). Frons usually 

 more or less convex, often much inflated; rarely flattened or 

 even a trifle concave. Genae long and narrow between the eyes 

 and the frons, broadening a little posteriorly. Clypeus broad, 

 generally at least -j of width of frons. Lorae small, laterally 

 covered largely by clypeus. Rostrum short. Ocelli distinct, 

 situated on the crown between the eyes below their anterior 

 margin. N'enation simple, often indistinct. In the type of the 

 tri'be, (the palaearctic Tcti^^onia z'iriciis (Linn) ) the two claval 

 veins run separately into the commissure (aberrations occur); 

 there are discoidal, 3 subapical. and 5 apical cell. A transverse 

 vein stands on the cubital, v^arying in position a little even in 

 the same individual, being sometimes basal of the median fork, 

 sometimes apical. In many species of the typical genus this 

 transverse vein is absent. Appendix present. In the wing 

 there is no supernumerary cell. The other Tetigoniini do not 

 differ greatly from this type, though sometimes the venation is 

 more or less reticulate. Three Australian species have been de- 

 scribed and I now add 6 more, all belonging to the typical 

 genus: 



Tetigonia GeofTrov. 



Tefigonia Geoffroy, 1762, Hist, a'bregee Ins.. I, 429. Kirkaldy, 



1900, Entomologist. XXXIII. 262. 

 Tetfigoiiia Latreille; Ball, 1903. Iowa Ac. Sci.. 15-28. PL III-V. 



(nee Linn). 

 CicadcUa Gray. 1832. Griflith's Anim. Kingdom. XV, 226. 

 TettigonicUa jacobi, 1904. Zool. Jahi^b. Syst.. XIX. 778. 



Antennal ledge small, scarcely visible dorsally. Head and 

 pronotum horizontal, vertex produced before the eyes, usually 

 obtusely rounded; frons swollen; Pronotum not twice as long 

 as scutellum. posterior margin slightly emarginate. Tegmina 

 broad, covering the tergites. not reticulate; with (usuallv) 5 

 discoidal C3 subapical) and 6 apical cells. 



