92 



elytra. It also resembles certain larval stages of Apolyta spp. in 

 the type of markings, but otherwise widely removed, and is the 

 smallest probably of the family. 



Platyzosteria latizona, spec. nov. 



Reddish-brown above and beneath, lateral and hindmargins of 

 all segments broadly ochreous-yellow. Head reddish ; ocelliform 

 spots minute ; lower margin of clypeus, palpi, and antennae 

 yellowish. Thoracic segments rugose, with coarse impressed dots. 

 Legs pale yellowish, middle and hind coxa? with a black patch at 

 the base ; tibia? from brownish to blackish-brown, Abdomen 

 scabrous, with numerous small tubercles, hindangles acute, those 

 of the last segments produced as acute trigonal spines. Supra- 

 anal lamina of male broad, quadrate, angular, hindmargin con- 

 cave ; of female tapering, hindmargin truncate, angles rounded, 

 slightly emarginate, and with three minute teeth on each side of 

 the notch, in both sexes yellowish, base black. Cerci lanceolate, 

 blackish, apex pale. Subgenital lamina of male blackish, with 

 paler median line and hindmargin, subquadrate, lateral and hind- 

 margins concave, angles produced as acute spines ; styles slender, 

 black. Subgenital plate of female brown, apex black, acute. 



^Male. Female. 



Length of body ... 17-21 mm. 22 mm. 



Length of pronotum ... 5 " 6 " 



Width of pronotum ... 9 " 11 " 



Habitat. — Mount Bryan East, South Australia (Thos. Bes^t). 

 S.A. Museum. 



This is a very handsome species and differs from the following 

 not only in colour, but also in the rugosity of the thoracic seg- 

 ments, cfec. Tt may come near to P. zonata^ Walker, at least in 

 colour. 



Platyzosteria Ardrossaxensis, sjjec. nov. 



Dull ferruginous. Head and the underside of the body wholly 

 pale straw-coloured ; antennae dark-brownish, basal joints pale, 

 ciliate. Pronotum thickly studded in the disk with minute 

 reddish tubercles in a pale ground, all margins pale straw- 

 coloured, lateral margins incrassated, a black streak between it 

 and the disk. Meso- and meta-notum similar, base of former 

 mostly narrowly black. Legs pale ; tibi?e reddish, with red 

 spines ; tarsi more or less black above. Abdominal segments 

 banded, base blackish, middle pale, w^ith red dots, hindmargin 

 dull greyish-olive, shading into a narrow whitish border-line in 

 segments one and five ; hindmargin of six and seven broadly 

 yellow, base more on less broadly black, middle band nearly obso- 

 lete ; hindangles acutely produced posteriorly. Supra-anal lamina 

 quadrate, angles, rounded, base black, hindmargin nearly straight. 



