BY ARTHUR M. LEA. 497 



few large ones at extreme base between coxae; lamellae terminat- 

 ing at about one-third their length from suture. Length 3-3§mm. 



Hah. — Geraldton, W.A. (under bark of Nuytsia florihundd). 



Close to discolor, but the clothing very different and punctures 

 of under surface less regular; the colour also is different. 



RuizoBius coNFiNis, n.sp. 



Oblong-ovate, moderately convex, shining. Reddish-brown; 

 anterior (and less distinctly the lateral) margins of prothorax, 

 head, under surface (epipleurae piceous-brown and metasternum 

 red) and appendages testaceous. Clothed with moderately short 

 white hairs (feebly waved on elytra), mingled with yellowish 

 erect setae. 



Punctures of prothorax and elytra and shape of prosternum as 

 in the preceding. Metasternum densely, strongly and almost 

 regularly punctate throughout and feebly transversely wrinkled. 

 Abdomen densely punctate, the basal segment irregularl}^ so, but 

 rather coarsely between coxae; lamellae extending to about one- 

 fourth from suture. Length 3 J mm. 



Hah. — Garden Island, W.A. 



Remarkably close to the preceding species, but differs in being 

 more convex, paler, setae and epipleurae differently coloured and 

 punctures of metasternum very different. 



Rhizobius occidentalis, Blackb. 



Pale testaceous, under surface (except epipleurte which are very 

 pale) darker; metasternum slightly infuscate or not; elytra with 

 piceous or brown, and more or less variable markings. Length 

 H-l| mm. 



Hah. — Swan River, Yasse, Rottnest Island, W.A. 



On each of four specimens there are two short transverse 

 arcuate fasciae (the convex side directed towards apex), a narrow 

 one just behind middle and a wider one between it and apex, a 

 faint blotch on each side at base, and signs of a feeble sublateral 

 stripe; on a fifth specimen the median fasciae are absent; on a 

 sixth all the markings are present but the lateral stripe is distinct 



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