394 STUDIES IN AUSTRALIAN ENTOMOLOGY, XVI., 



anterior half, very slightly and obliquely narrowed posteriorly; 

 apex lightly and widely roundly emarginate; anterior angles 

 obtuse, distant from neck; base emarginate in middle, truncate 

 on each side; basal angles subrectangular (a little obtuse at 

 summit); lateral border narrow; lateral channel narrow, ending 

 at basal angles; median line lightly marked; two lightly im 

 pressed impunctate basal impressions on each side, inner 

 impression linear, short, ])laced opposite fourth interstice of 

 elytra; outer impression short, wide, shallow, opposite sixth 

 interstice of elytra. Elytra very little wider than piothorax 

 (41 X 28 mm.), subdepressed on disc, strongly declivous to apex 

 and sides, lightly declivous to base on each side of scutellum, 

 truncate at base, rounded at apex; sides almost parallel; inter- 

 stices convex, 1-6 about equal on disc, 6-8 greatly narrowed to 

 apex, seventh and eighth narrow, ninth seriate-punctate. Pro- 

 sternum with intercoxal part truncate, bordered, vertical and 

 flat on posterior declivity; episterna nitid, impunctate. Mesepi- 

 sterna with a few punctures in channel. Metasternum with a 

 strong external marginal channel; episterna impunctate, longi- 

 tudinally sulcate near inner margin. Ventral segments 1-3 with 

 a few indistinct punctures laterally, 3-6 bipunctate, transversely 

 striate near posterior margin. Femora wide: four posterior tarsi 

 with joints sulcate externally, fifth joint setulose beneath; 

 anterior tarsi in ^ dilated and biseriately squamulose beneath. 

 Length 7 •2, breadth 2 -8 mm. 



Hab. — Vic: Mordialloc(C. French, Junr.). 



This species (kindly given to me by Mr. 0. French) is wider 

 and more depre.ssed than S. piinctiventris SI., with head wider, 

 eyes much less prominent and more strongly inclosed behind, 

 frontal impressions less strongly impressed; prothorax less convex, 

 wider, widest part more forward, sides less rounded, lateral basal 

 impressions much weaker and not punctate, no seta at basal 

 angle; mes- and metepisterna not strongly punctate. From S 

 nanus SI., it is at once distinguished by its much larger size, 

 wider form, more depressed upper surface; prothorax much more 

 transverse, proportionately much wider at base, etc. The second 



