316 Mr. J. S. Baly's descriptions of neio genera 



que anticis quatuor fulvis; supra cuprea, antennis fulvis; 

 capite longitudine latiori, ruguloso; tliorace profunde et 

 crebre punctato, ad latera ruguloso; elytris fortiter punc- 

 tato-striatis, stria prima tota et stria secund^ ante me- 

 dium confusis; interspatiis nitidis, externis convexius- 

 culis. 



Long. 1 lin. Hab. — Western Australia. 



Head rather broader than long ; vertex and front 

 rugose, punctate, impressed within the eyes with large 

 round punctures ; sutural grooves separating the front 

 from the interocular spaces nearly obsolete ; clypeus very 

 short, piceous; antennre rather more than half the length 

 of the body, six outer joints stained with fuscous; basal 

 joint nearly equal in length to the two following united, 

 the second scarcely thickened, equal in length to the third. 

 Thorax three times as broad as long ; sides rounded and 

 converging from the base to the middle, thence straight 

 and very slightly converging to the apex, anterior angle 

 thickened, its extreme apex obtuse; upper surface closely 

 and deeply impressed with large round punctures ; inter- 

 spaces shining, rugulose on the sides. Elytra oblong- 

 ovate, rather broader than the thorax; above convex, 

 strongly punctate-striate, the punctures on the whole of 

 the first stria, together with those on the anterior half of 

 the second, confused ; interspaces nitidous, convex towards 

 the apex, those on the outer margin convex for their whole 

 length. 



The more ovate form, the bread head, short clypeus, 

 differently-shaped thorax and the more confused punctua- 

 tion at the inner base of the elytron, separate this species 

 at once from C. IVaterhousei. 



Chcetocncma laticollis. 



Ovata, convexa, nigro-cuprea, nitida, antennis nigris, 

 basi piceis ; subtus nigra, pedibus piceo-seneis, tibiis tar- 

 sisque fulvo-piceis ; capite magno, thoracem latitudine 

 Eequanti, Igevissime ruguloso ; thorace elytris fere jequilato, 

 nitido, basi utrinque oblique impresso ; disco Ifevissime 

 ruguloso, tenuiter punctato, lateribus magis distincte punc- 

 tatis, distincte rugulosis ; elytris regulariter punctato- 

 striatis, interspatiis planis, externis convexis. Mas. 



Long. 1 lin. Hab. — Western Australia, Swan Kiver. 



Head large ; vertex and front broad, slightly convex. 



