BY THOMAS G. SLOANE. 393 



Posterior trochanters impunctate. Length 14-16, breadth 6-6 -25 

 mm. 



Hah. — North-West Australia. Sent to me by Mr. C. French, 

 as from the Ashburton River. Coll Sloane. 



Differs from the other dark-coloured species of Chlcenioidius 

 by the sliarply-markeJ posterior angles of the prothorax. It is 

 readily distinguished from C. prolixa Erichs., by prothorax more 

 depressed, wider in front, sides sinuate posteriorly, basal angles 

 mjve sharply marked, lateral basal im[)ression much shallower; 

 elytra with interstices convex; posterior trochanters not bearing 

 a setigerous puncture, etc.; from C. pceciloides Chaud., it differs 

 by prothorax longer, less strongly rounded on sides, less strongly 

 narrowed posteriorly, wider across base, basal angles more sharply 

 marked. 



Note. — The brown colour would serve to differentiate it from 

 a'l the other species, but possibly this may be due to the imma- 

 turity of the specimens before me. 



Genus Setalimorphus. 



Setalimorphus regularis, n.sp. 



(J. Robust, elliptical, parallel on sides; prothorax lajvigate, 

 -subquardate, widest before middle, sides unisetigerous at 

 anterior third; elytra strongly simply striate, humeral angles 

 dentate, interstices convex, third unipunctate a little behind 

 middle; metepisterna subquadrate (but, including epimera not 

 broader thun long). Black, antennfe and mouth-parts ferru- 

 ginous, legs piceous-red. 



Head convex, wide(r5 mm. across eyes), sharply constricted 

 to a wide neck behind eyes; front biimpressed, impressions wide 

 apart, arcuate, diverging backwards, extending forward to 

 anterior m;irgin of clypeus; vertex transversely impressed on 

 each side behind posterior supraorbital punctui'e; eyes convex, 

 not rounilly prominent, strongly inclosed in orbits behind. 

 Prothorax broader than long(2 x 2 65 mm.), depressed on disc, 

 declivous to sides on anterior two-thirds; base much wider 

 (2-35 mm ) than apex(l-7 mm.); sides very lightly rounded on 



