89 



margins of segments, and one or more irregular intermediate 

 rows, hindangles produced as acute flat spines, the last segment 

 laterally dentate, and with very large spines. Underside of body 

 and legs wholly black, rarely slightly lurid. Coxse narrowly 

 bordered with yellow. Ventral segments of abdomen from nearly 

 smooth to scabrous. Supra-anal lamina of male rugose, hind- 

 margin entirely ciliate ; of female rounded, dentate, emarginate. 

 Cerci lanceolate, flat, black, apex pale. Subgenital lamina of 

 male pale reddish or brown, hindmargin concave, lateral angles 

 much and acutely produced. Styles inserted laterally near the 

 base. 



Habitat. — Adelaide, Belair, Largs Bay, and Ravine des Casoars, 

 Kangaroo Island ; South Australia. S.A. Museum. 



This species resembles the preceding species, but is much 

 smaller, and the margin is distinctly paler. It is one of the 

 commoner kinds, there being 20 specimens in the collection 

 (eight males, nine females, and three larvae), most of which were 

 captured by myself from March to June inclusively. At this 

 time they are rather numerous, living concealed by day in cool 

 places, such as dead wood and other vegetable debris, with which 

 they are occasionally brought into towns, l)ut avoid houses, and 

 soon disappear. Their odour on handling is strong, and very 

 disagreeable. In some specimens the texture is much smoother 

 than in others, while in rare cases, the paler markings are almost 

 entirely absent, excepting the antenna? and the tips of the cerci. 



Platyzosteria castanea, Brimner (System, 214). 



" Brownish-chestnut. Body convex in the middle. Elytra 

 lobiform. Supra-anal lamina of male slightly impressed ni the 

 middle, angles acute ;. of the female serrulate, sub-emarginate. 



Male and Female. 



Length of body 21mm. 



Length of pronotum ... ... ... 6 "' 



Width of pronotum ... ... ... 9 " 



Habitat. — New South Wales." 



Platyzosteria pseudocastanea, sjjec. nov. 



Resembling the preceding. Legs uniformly reddish-brown, 

 tarsi paler. Supra-anal lamina of male very scabrous, middle 

 arched, margin subrotundate, dentate, emarginate, reddish, the 



