69 



Australia by numerous endemic species, besides others of cos- 

 mopolitan habitus ; indeed it is the largest in Australia. 



It may be conveniently divided into two sub-families, viz., A. 

 PoLYZOSTERix.E — (integument more or less corneous and rigid ; 

 wings wholly or almost wholly absent) — and B. Pekiplaxetix.e 

 — (integument rather soft and leathery, wings perfect or rudi- 

 mentary). The first admits again of a natural subdivision into 

 PoLYZOSTERLE and PLATYZOSTERiyE, characterisable as follows : — 



a. Body broadly oval. Ocelliform spots obsolete. Organs of flight 



entirely absent, Tibiie stoat, spines stout, short. Abdomen 

 (lorsally with prominent stigmatic dots. 8upra-anal lamina of 

 female broad, rounde.l, more or less incised, lobes rounded. 

 Cerci short, depressed. Subgenital lamina of male with short, 

 obtuse styles. PoLYZOSTERi.i: {Auame-sia, Folyzo-steria). 



b. Body elongate oval. Ocelliform spots (two) at base of antennae 



more or less distinct. Tibia? compressed, spines long, slender. 

 Abdominal stigmatic dots not distinct dorsally. Supra-anal 

 lamina of female triangular, emarginate. Cerci as long or 

 longer than lamina (blackish). Subgenital lamina of male with 

 slender acuminate styles. 



Platyzosteri-i: {Platyzo-^ttria, Leptozo-ittria, Pseadolampra, 

 Knephasia). 



Anamesia, gen. not: (Intermediary). 



Body broad, siibfusiform (abdomen distinctly wider thaii 

 thorax), moderately convex ; texture coarse. Pronotum semi- 

 circular, hindmargin fiexuose (concave laterally, convex in the 

 middle) ; hindangies rounded, or slightly angular. Elytra of 

 both sexes obsolete. Legs long, slender, notably the last pair ; 

 tarsi as in Polyzosteria. Supra-anal lamina of male qwidrate or 

 sahqimdrate, hindmargin slightly and broadly emarginate, or 

 rounded. Cerci straight or sublanceolate, shortly acuminate, in 

 both sexes distinctly exceeding the lamina, apex shortly 

 acuminate. Styles rather long, slender, acute. 



The generic name refers to the intermediary form of l)ody 

 between Geoscapheus and Polyzosteria, and to a certain extent 

 (in other characters) between the latter and Platyzosteria. 



The fijllowing synopsis will denote the characteristic 

 differences : — - 



a. Body subfusiform (abdomen wider than thorax). Hindmargin of 

 pronotum flexuose, angles more or less rounded. Supra-amxl 

 lamina of male more or less quadrate, hindmargin concave or 

 very slightly rounded. Cerci straight, distinctly exceeding the 

 lamina, shortly acuminate. Legs long, slender. 



Anamesia, (jtii. nor. 



a. a. Body elliptical. Hindinargin of pronotum straight, angles acute. 

 Supra-anal lamina of male transverse, hindmargin straight. 

 Cerci lanceolate, scarcely exceeding the lamina. Legs short, 

 more or less incrassated. Polyzosteria, Burm. 



