Ill 



Habitat. — Mount Lofty Range, Adelaide, Nairne, Nuriootpa, 

 Ardrossan (Yorke's Peninsula) : South Australia. S. A. Museum. 



Some ten specimens were examined, varying very slightly, as 

 indicated above. The species differs from Platyzosteria albo- 

 marginata, Br., only in the form of the supra-anal lamina, 

 greater length of cerci, and brighter colour of the legs ; and the 

 latter might probably be included in this genus with advantage. 

 D. Gommu7iis, as implied by the name, is one of the commonest 

 species in the southern part of the province, occurring in the 

 adult stage from June till January, and perhaps more seldom all 

 the year round, but is very shy and active. Its odour is very 

 disagreeable. 



Drymaplaneta submargixata, spec, nov. 



Dark piceous to chestnut, with the pale-yellowish margin 

 nearly all round. Head of male, with trilobed vertex, and a 

 patch like an hourglass in front reddish-brown, remainder pale- 

 yellowish or whitish ; of female concolorous, reddish ; palpi 

 whitish, second and third joints equally long, very thick ; fourth 

 joint shorter, pale-yellowish ; antennse ferruginous. Pronotum 

 shining, pale margin contiguous in front, or more or less inter- 

 rupted, a narrow dark-red medial line or broader lurid stripe 

 (sometimes obsolete). Elytra short. Metanotum with the hind- 

 angles considerably produced, rounded. Underside dark chestnut. 

 Legs with the coxae pale-yellowish, with a blackish stripe ; femora 

 and tarsi rather darker ; tibiae reddish to brownish. Abdomen 

 slightly dilated, hindangles of segments much produced, acute, 

 lateral pale stripe interrupted by narrow black and brown hind- 

 margin, reduced to short narrow streaks in segments six and 

 seven. Supra-anal lamina of male quadrilateral, black, hind- 

 margin retuse, slightly ciliate, angles obtuse ; of female the hind- 

 margin of segment seven bordered yellowish, lamina narrow, 

 subtriangular, slightly compressed, deeply and triangularly 

 emarginate, sides narrowly yellowish, lobes subacute. Cerci of 

 male nearly twice as long as lamina, brown, concolorous ; of 

 female piceous, apex yellowish. Subgenital lamina of male 

 transverse, truncate ; styles slender, acute, red, nearly as long as 

 the cerci. 



Male (adults). Female (larva?). 

 Length of body ... 21-23-5 mm. 21 mm. 



Length of pronotum 7 " 5 " 



Width of pronotum 9-10 " 7 " 



Habitat. — South-western part of Kangaroo Island, Blakiston, 

 Mount Lofty Range : South Australia. S.A. Museum. 



There is some doubt as to the correct mating of the sexes. A 

 very young larva from the Northern Territory and two others 



