BY THOMAS G. SLOANE. 197 



the typical form, the other two differ slightly in facies; one has 

 the elytra a little wider, more convex and more decidedly 

 emarginate at base, the other has the elytra more convex with 

 the suture strongly impressed and the prothorax more truncate 

 across the middle of the base; both agree with the type in every 

 other respect. 



Closely allied to C. Jceuipenne, MacL; The head is similar, 

 but has two supraorbital punctures on each side* and one or 

 more setigerous punctures on the gente below the antennal scrobes; 

 the antennae are a little more slender, the apical joints being 

 longer; the prothorax hardly differs in shape, but is a little less 

 rounded on the middle of the sides and less evenly rounded on 

 the basal curve; it has two marginal punctures on each side (C 

 Irevipenne has none); the elytra are flatter, shorter and more 

 cordate (the sides more strongly rounded backwards from the 

 shoulders); the more depressed disc gives the base a more 

 emarginate appearance. C. cordipenne also differs from C 

 ii'editu7n, MacL, by all the characters given above. 



Carenum brbviforme. Bates. 



Prothorax and elytra margined with green, head and prothorax 

 wholly black beneath, elytra with disc purple-black (the green 

 margin very wide, reaching to discoidal ajDical punctures). 



Closely allied to C. virescens, SI.; the following differences may 

 be noted : — Elytra with disc deep purple-black not overspread 

 with green; the lateral punctures of clypeus giving off a sulcus 

 which reaches anterior margin at inner side of base of intermediate 

 projections; sides of head less abrupt (lightly and evenly rounded) 

 above e3''es ; prothorax shorter, posterior angles more strongly 

 marked; elytra shorter, less narrowed to humeral angles, these 

 more rounded and less marked. 



* Specimens of C. Iceinpenne sent me by Mr. A. M, Lea from Mt. Barker, 

 W.A., liave one supraorbital puncture on each side; another specimen is 

 in my collection without any svipraorbital puncture. 



