BY T. G. SLOANE. 591 



Head large (6 mm. across eyes), punctate; front with a rounded 

 rugulose impression on each side; eyes prominent. Mandibles 

 in (J very long, decussate. Prothorax broader than long (5-5x8 

 mm.), of equal width at base and apex (4"9 mm.); disc convex; 

 margins wide, explanate; upper surface strongly punctate, the 

 punctures closely placed on lateral margins, more dispersed on 

 disc; sides roundly ampliate just before middle, strongly narrowed 

 to apex in an even curve, obliquely narrowed to posterior fourth 

 and straightened before meeting base; anterior margin truncate 

 behind head; anterior angles widely rounded, hardly advanced; 

 base widely emarginate above peduncle, truncate on each side; 

 basal angles distant from peduncle, well marked, upturned, obtuse 

 at summit. Elytra opaque, convex, much wider than prothorax 

 (17 X 12-3 mm.), oval, truncate at apex, not covering apex of 

 abdomen, widest a little behind middle, lightly but decidedly 

 rounded on sides; humeral angles rounded off; striae with small 

 separate punctures in their course; interstices shagreened, bi- 

 seriately punctate; punctures small and distant from one another; 

 third, fifth, and seventh interstices lightly costate; even inter- 

 stices hardly convex, more irregularly punctate. Abdomen con- 

 vex, hardly punctate except near sides — especially on first and 

 second segments. Length 30, breadth 12*3 mm. 



Hah. — Western Australia: Murchison District. I first re- 

 ceived this fine species in 1894, from Mr. C. French of Melbourne; 

 recently Mr. W. W . Brown has found it at Anketell, near Cue. 



This large, robust species differs greatly in facies from the 

 species of Helluo and Gigadema; and from Uelluarchus by facies 

 (elytra truncate, and not depressed on disc, and declivous to sides 

 and apex). 



Var. punctata. Differs from the typical form by upper surface 

 more nitid, interstices of elytra nitid, not shagreened; head, pro- 

 thorax, and elytra far more strongly punctate; elytra less convex, 

 odd interstices less convex (particularly third) ; puncturation 

 much stronger (punctures larger and deeper) particularly towards 

 sides; striae more or less interrupted by large punctures, especially 

 towards sides ; puncturation of ninth interstice and lateral 

 channel much stronger; under surface generally more strongly 



