BY THOMAS G. SLOANE. 449 



strongly rounded, strongly sinuate posteriorly, and meeting base 

 at right angles; median line strongly impressed; lateral basal 

 impressions deep, narrow, elongate. Elytra oval (7"5x5mm.); 

 sides strongly rounded; base emarginate; humeral angles obtuselj' 

 raised: apex strongly sinuate on each side; Hrst stria strongly 

 impressed, not reaching base; striae 2-4 deep, not reaching apex: 

 interstices 2-4 convex: a row of punctures along lateral margins. 

 Length, 14-5; breadth, 5 mm. 



//a6.— N.S.W.: Tweed River (Carter and Lea). Type in Coll. 

 iSloane. 



Two specimens ((J9) liave been examined: the description has 

 been founded on the one in best condition. Formerly, T took 

 this species to be M. ater Cast.; but, having compared it with 

 specimens of that species in the Howitt Collection, in the National 

 Museum, Melbourne, which are ticketed " Brisbane," I find my 

 identification was wrong. M. ater Cast., is a species closely 

 allied to J/. aufjuJicoUis SI. I have not made any comparative 

 note on the difi'erences between these species. M amplicollis 

 differs from Af. iiiyer Cast., by prothorax wider, sides more 

 ampliate and more strongly rounded, more strongly sinuate to 

 base; elytra with only four striae on disc, fourth stria not reach- 

 ing apex, fifth obsolete; it difl:ers also from M. cotivexiis SI., by 

 almost the same characters. 



Genus M e c y c l o t h o r a x. 

 Mkcyclothorax LiEvicoLLis, n.sp. 



Elliptical-oval. Head convex, laevigate, front feebly biim- 

 pressed; prothorax transverse, wider at base than apex, not 

 punctate near base; elytra fully striate, striae 1-7 on disc formed 

 by rows of punctures. Black, nitid; legs reddish; antennse with 

 the two basal joints testaceous, the other joints sometimes 

 slightly infuscate. 



Eyes convex, not prominent. Prothorax transverse (LI x L6 

 irim.), depressed on disc and across base, laevigate (without 

 punctures near basal margin), bordered (except on middle of 

 base); sides lightly rounded; anterior angles obtuse; base trun- 

 cate on each side, lightly sinuate on each side of peduncle; basal 



3 



