BY THOMAS G. SLOANK. 375 



SI., by its more convex head, with shorter and more parallel 

 frontal sulci; prothorax with posterior angles not marked; elytra 

 more rounded at humeral angles, and with the base not so wide 

 or truncate. 



Cakenum lobatum, n.sp. 



Elliptical-oval, lsevigate; frontal sulci parallel; prothorax short, 

 transverse; elytra oval, bipunctate towards apex, humeral angles 

 a little upturned, not prominent ; anterior tibiae tridentate. 

 Black, nitid, elytra and prothorax slightly violaceous towards 

 sides. 



Head subquadrate (3 - 7 x 5 - 4 mm.), convex behind eyes; front 

 and clypeus sloping gently forward to anterior margin; clypeus 

 with median part truncate, intermediate angles short, triangular, 

 obtuse; preocular sulcus well marked; preocular process small, 

 narrow; eyes depressed, strongly enclosed posteriorly; one supra- 

 orbital puncture on each side. Prothorax transverse (4x7 mm.); 

 sides subparallel in middle, widely and evenly rounded at posterior 

 angles ; apex emarginate ; anterior angles lightly advanced, 

 rounded; basal lobe well developed, rounded; border reflexed, 

 more strongly so at posterior angles; two marginal punctures 

 on each side; basal area defined by a transverse impression; a 

 short light impression near each basal sinuosity. Elytra oval 

 (10'ox 7'3mra.); sides evenly rounded; base truncate between 

 humeral angles, strongly declivous to peduncle; punctures of 

 basal declivity in two transverse rows (three in each row) on each 

 elytron ; punctures of lateral channel closely placed ; border 

 reflexed, a little thickened and turned over at humeral angles. 

 Prosternum not bordered on anterior margin; intercoxal part 

 truncate at base, bipunctate on each side. Legs light, posterior 

 tarsi with basal joint about as long as (not longer than) two 

 succeeding joints together. Length 20, breadth 7 3 mm. 



Hub. — North- West Australia (Coll. French; unique). 



Allied to C. disp'xr, Macl, from which it diners by colour; 

 shorter and more lobate prothorax ; more oval elytra, more 

 narrowed to the humeral angles and less truncate on the base; 



