39 



Femora shortly spined, tibise slightly incrassatecl. Abdomen very 

 flat, nearly alike in both sexes, dorsal segments 8 — 9. Supra- 

 anal lamina large, almost as long as wide ; of the male subtrun- 

 cate, broadly emarginate, angles rounded ; of the female much 

 narrower, subtriangular, arched, triangularly emarginate. Sub- 

 genital lamina with long filiform styles. Cerci ten-jointed. 



The genus appears to form an intermediate link between 

 AphJehia and Temnopteryx, the structure of the elytra appertain- 

 ing to the former and the general form of body, legs, and genital 

 appendages to the latter. The following synopsis denotes the 

 afiinities of this to Temnopteryx and the succeeding genus : — 

 Elytra abbreviated. Wings rudimentary or none. 

 1. Veins more or less distinct and complete. 



2. Elytra truncate, subquadrangular. Veins complete, 

 simple, more or less parallel. 



Temnopteryx, Br. 

 2.2. Elytra ovate, rounded. Veins incomplete, sinuate. 



Balta, gen. nov. 

 1.1. Veins almost obsolete, or very indistinct. Elytra 

 truncate, subquadrangular, transparent. 



Temnelytra, gen. nov. 



Temnelytra Harpuri, sp. nov. 



Pale brownish-yellow. Integument of pro- and meso-notum 

 almost transparent. Pronotum rounded in front, straight behind, 

 angles rounded, margin broad, whitish, hyaline, disk brownish, 

 showing outline of body beneath, and marked by a slender 

 brownish line, the hindmargin overlapping the mesonotum con- 

 siderably. 



Elytra of male quadrilateral, truncate, exceeding the meta- 

 notum, with numerous impressed dots, with radial and anal vein 

 distinct, latter terminating apparently in the posterior apical 

 angle, margins pale yellowish, disk pale brownish ; female wing- 

 less. Abdomen of both sexes pale yellowish, above with a paler 

 margin, an interrupted piceous stripe, including black dots ; 

 of male beneath black towards the margin and apex, paler 

 elsewhere ; of female quite pale with two dark marginal stripes. 



jSIale. Female. Larva. 



Length of body ... 15-17 mm. 15 mm. 10 mm. 



Length of elytra ... 4-5 " — " — " 



Length of pronotum... 5 " 4:-5 " 2-7 " 



Width of pronotum... 6 " 5-5 " 4 " 



Habitat. — Cygnet River, and Karatta, Kangaroo Island. 



Two males, one female, and one larva (S.A. Museum). 



The insects are diurnal in habit, and were captured on Acacia 



