430 STUDIES IX AUSTRALIAN ENTOMOLOGY, 



fourths of sides, widest a little behind anterior marginal puncture, 

 wider across base than across apex ; sides lightly rounded on 

 anterior three-fourths, subsinuate posteriorly and meeting the 

 Ijase at right angles '; anterior margin emarginate ; base emargi- 

 nate across peduncle ; anterior angle obtuse ; basal angles 

 rectangular ; border narrow, reflexed on sides, extending along- 

 anterior margin on each side, ending at basal angles ; median 

 line lightly impressed ; a short straight linear impression extending 

 forward from base on each side, rather nearer median line than 

 mai'gin ; space between these impressions and margin flat> 

 ol^soletely and widely impressed ; posterior setigerous marginal 

 puncture beside the border at each basal angle. Elytra ovate, 

 short, a little wider than prothorax (4-6 x 3 mm.), lightly 

 rounded on sides, depressed on disc, strongly declivous to apex, 

 a))ruptly declivous on sides from sixth stria ; apical curve obtuse, 

 widely sinuate on each side ; stria? well marked ; interstices flat 

 on disc, seventh and eighth convex, fifth and seventh enclosing 

 sixth at apex ; third lightly 3-punctate, anterior puncture near 

 third stria, two posterior ones along course of second stria ; 

 ninth interstice wider towards apex, strongly punctate ; basal 

 border ending in a short dentiform projection at humeral angles ; 

 lateral border strongly reflexed. Prosternum bordered on base. 

 Posterior femora dilatate behind trt)chanters. 



Length 7 "5, breadth 3 mm. 



Uah. — Burrawang, N.8.W. (Taken by me lOtli Novemlier, 

 1890.) 



This species is readily distinguished from P. boisduvaUii, 

 Casteln., by its much smaller size ; it differs too in having the 

 eighth interstice of the elytra narrow and convex ; and not wide 

 and flat, as in P. boisduvaUii. From P. rubricornis, SI., its larger 

 size, more depressed form, and the finer punctures of the third 

 interstice of the elytra help to differentiate it. 



Prosopogmus rubricornis, n.sp. 

 Elliptic-oval ; prothorax subquadrate ; elytra short, striate, 

 shoulders dentate ; prosternum bordered ; metasternal episterna 

 short. 



