464 Mr. A. M. Lea on 



Diethusa astuans, Pasc. Perth. 



D. squamivaria, Lea. Ourimbah, Baan Baa, Sydney. 



Melantcrius rufimanus, sp. n. 



Black, sliining ; antennae and tarsi red. Upper surface 

 almost glabrous ; lower surface with rather sparse white setse, 

 becoming denser on legs. 



Eijes moderately separated. Rostrum long and thin ; 

 with distinct punctures near base, but elsewhere very small 

 and sparse. Scape inserted about three-sevenths from apex 

 of rostrum, almost the length of funicle ; first joint of 

 funicle stouter, but no longer than second. Prothorux 

 almost as long as wide ; witli dense and clearly defined, but 

 rather small punctures. Elytra subcordate, shoulders and 

 sides rather strongly rounded ; with not very large, sub- 

 oblong punctures, becoming smaller posteriorly ; interstices 

 much wider than punctures, acutely ridged from near middle 

 to apex, but the lateral ones almost to base, with sparse and 

 small punctures. Basal segment of abdomen feebly depressed 

 in middle of apex. Femora stout, strongly dentate ; tibial 

 hooks rather strong. 



Length 4^ mm. 



Hab. New South Wales : Baan Baa. 



In general appearance close to semiporosus, but narrower, 

 elytral punctures not quite the same, and femoral dentition 

 (notably of the front pair) much stronger. In my table 

 would be associated with porosus, which has a much shorter 

 rostrum, antennae stouter, with club subcontinuous with 

 funicle, abdomen with larger punctures, elytral punctures 

 larger, second interstice carinated only posteriorly and 

 femoral dentition less conspicuous. The type is probably 

 a female. 



Melanterius porcatus, Er. Port Darwin. 



M. acacia, Lea. Mordialloc, Sydney, lllawarra. 



M. adipatus, Lea. lllawarra, Ourimbah. 



M. costipennis , Lea. Sydney. 



M. strabonus, Lea. Port Darwin. 



M. tristis, Lea. Sydney. 



M. vulgivagus, Lea. Kuranda. 



Melanteriosoma costatum, Lea. Ourimbah. 



