BY THOMAS G. SLOANE. 397 



strong punctures on l^ase of each elytron ; a row of strong punc. 

 tures along lateral margins, more closely placed in middle ; suture 

 forming a deeply impressed channel. Prosternum lightly rugu- 

 lose on each side near anterior margin of coxte, widely impressed 

 between coxa?, truncate on base ; two setigerous punctures on each 

 side before base. Legs heavy : femora wide, compressed : anterior 

 tibia? tridentate externally, the upper tooth much smaller than the 

 others ; external ridge with three small projections above the 

 larger teeth ; inferior ridge strongly serrate, not extending to 

 apex ; apical plate narrow, projecting strongly in front below 

 tarsus ; intermediate tibife rough, strongly incrassate, a short 

 light spiniform external spur at apex ; posterior tilna? light, 

 incrassate. 



Length 30, breadth 11 mm. 



//rt6.-_Gnarlbine, W.A. (Yilgarn Guldfields District). (In tlie 

 collection of Mr. C. French). 



This splendid species is a very distinct one, differing decidedly 

 in facies from all the other members of the genus I have seen. Its 

 place will be with C. transversicolle, Chaud., which it resembles 

 somewhat in the shape of the prothorax ; the elytra are, however, 

 proportionately longer and less rounded on the sides, which gives 

 it a very different appearance. 



Carenum optimu>[, n.sp. 



Elliptic-oval, robust, convex ; head subquadrate, sul^orbital 

 channel single ; prothorax widely rounded at posterior angles, 

 base lobate ; elytra ovate, bipunctate, inflexed margin wide : 

 anterior tibi£e tridentate, posterior tibiae light. 



Head, legs and underparts of body black, prosternum green on 

 each side near anterior margin ; prothorax black on disc (inclu- 

 ding middle of anterior margin) with wide brassy-green margins, 

 inflexed margin of pronotum black with green reflections ; elytra 

 brilliant green, becoming of a coppery tinge towards margins, disc 

 with purple reflections in some lights, inflexed margin green. 

 Head not large, subquadrate, transverse (4*5 x 6 '6 mm.), de- 

 pressed, Ifevigate ; frontal sulci deep, diverging strongly backwards. 



