254 



ME. J. S. BALT O'S 'SEW SPECIES 



nearly obsolete. Elytra much broader than the thorax, broadly 

 obloDg, sides parallel, the apex regularly rounded ; above con- 

 vex, transversely excavated below the basilar space, the humeral 

 callus moderately thickened ; regularly punctate-striate, the stria) 

 sulcate, the punctures large, deeply" impressed, those at the bases 

 of the three or four inner striae less regularly placed ; inter- 

 spaces strongly costate, the costse on the transverse depression 

 obsolete and replaced by irregular transverse rug£e. 



Genus Colasposoma, Laporte. 



CoLASPOSOMA SELLATUM. Late oblongo-ovatum, convexum, subtus 

 cupreo-.Tneum, femoribus nigro-seneis, auveo micantibus, tibiis tarsis- 

 que nigris seneo vix tinctis ; supra igneo-ffinea, antennis metallico- 

 purpureis, extrorsum nigris ; thorace fortiter subcrebre punctatO; iii- 

 terstitiis nitidis ; elytris rufo-igneis, dorso viridi-metallicis, fortiter 

 confuse punctatis, punctis ad apicem minus fortiter impressis, pone 

 medium prope suturam striatim dispositis, interspatiis la^vibus, ad 

 latus transversim elevato-rugosis. Long. 4 lin. 



Hal). Western Australia. 



Head strongly punctured ; vertex on either side above the eye 

 rugose-strigose ; front rugose, its mesial line impressed with a lon- 

 gitudinal groove ; clypeus rugose-punctate, its apex not separated 

 from the upper face, its anterior border sinuate ; labrum piceous, 

 jaws and eyes black, the latter faintly sinuate within, the inter- 

 ocular spaces coarsely punctured : antennae about half the length 

 of the body, four lower joints obscure metallic purple, the rest 

 slightly thickened, black. Thorax nearly three times as broad as 

 long ; sides rounded, converging in front ; all the angles mucro- 

 nate ; basal margin slightly oblique on either side, sinuate near 

 the median lobe, the latter slightly produced, very obtusely trun- 

 cate ; upper surface strongly but not closely punctured, the inter- 

 spaces shining, impunctatc ; basal border margined, the punctures 

 immediately in front of its median lobe more crowded than on the 

 disk. Scutellum serairotundate-ovate, its apex rounded, the side 

 sinuate at the base. Elytra rather broader than the thorax, 

 quadrate-oblong, regularly rounded at the apex ; convex, faintly 

 depressed transversely below the basilar space, the humeral callus 

 moderately thickened, strongly but more distantly punctured 

 than the thorax, the punctuation finer towards the apex, the 

 punctures on the inner disk below its middle arranged in irregular 

 longitudinal rows; interspaces smooth and shining, rather distantly 



