118 REVISIONAL NOTES ON AUSTRALIAN CAIIADID.!-:,!!., 



third; anterior tibite trideiitate. Head and undersurface black; 

 prothorax black, becoming faintly purple towards sides, marginal 

 channel green (except across basal lobe — black); elytra purple, 

 blackish near suture, lateral channel viridescent; inflexed margins 

 with greenish reflections. 



Head transversely subquadrate (2-5 x 3-8 mm.); sides abrupt 

 above eyes; front subdepressed ; frontal sulci deep, lightly 

 sinuate, divergent and defining lateral frontal spaces posteriorly; 

 preocular sulcus short, strongly defined; eyes rather protuberant; 

 orbits not prominent behind eyes; two supraorbital punctures 

 on each side. Prothorax transverse (3'3 x 4*5 mm.), convex, 

 roundly declivous posteriorly to the well-defined basal area; 

 sides subparallel in middle, widely and evenly rounded from 

 intermediate marginal puncture to basal lobe; anterior angles 

 strongly advanced ; basal lobe short, rounded, well defined ; 

 border narrow, reflexed, thicker and more strongly reflexed on 

 basal lobe; marginal channel narrow, wider across basal lobe; a^ 

 shallow basal impression on each side near basal sinuosities; 

 median line strongly impressed. Elytra oval (8*0 x 4-7 mm.), 

 convex; sides evenly rounded; base narrow, obliquely — but 

 strongly — declivous to peduncle, bordered on each side (the 

 border narrow and sharply defined); margin explanate at apex; 

 border nari'ow, reflexed, prominent at humeral angles, arcuate 

 on each elytron near apex; inflexed margin wide, vertical at apex. 

 Intercoxal part of prosternum hardly longitudinally impressed, 

 bipunctate on each side. Second ventral suture obsolete in 

 middle. Legs light; anterior femora not dilatate in middle; 

 anterior tibiae slender; posterior tibiie not thick. Length 15, 

 breadth 4 '7 mm. 



JIab.—W.A. : East Murchison District (Coll. French). 

 Its athnity is to C. distinctum, Macl., these two species being 

 differentiated from their near allies by the following features in 

 combination : — head with two supraorbital punctures on each 

 side; prothorax with three marginal punctures on each side, 

 marginal channel and border narrow; posterior tibine slender. 

 C. concinnum may be distinguished from C. distinctura by its 



