BY THOMAS G. SLOANE. 427 



projecting beyond posterior part of orbit, this about two-thirds 

 the size of eyes. Prothorax subquadrate (3-5 x 4-6 mm.); 

 sides evenly rounded ; anterior margin A^ery Hghtly emai'ginate : 

 base truncate, very lightly emarginate across peduncle ; anterior 

 angles rounded ; basal angles rounded, but marked ; lateral 

 border widely and strongly reflexed ; marginal channel wide ; 

 lateral basal impressions wide, foveiform ; median line linear, 

 well marked, not ending behind in a punctiform impression ; 

 posterior marginal puncture at basal angles. Elytra oval (10 x 5-8 

 mm.), lightly convex, depressed on disc, widest a little behind 

 middle ; shoulders rounded ; basal border nearly straight on each 

 side from scutellar striole to shoulders, not raised above lateral 

 border or projecting the least at shoulders ; apex widely rounded, 

 lightly subsinuate on each side ; strite strongly impressed, 

 crenulate ; scutellar striole very short, on first interstice ; 

 interstices rather depressed, hardly convex, hardly more promi- 

 nent towards apex, third unipunctate (the jDuncture placed on the 

 posterior declivity about 1-5 mm. from apex), ninth punctate (the 

 punctures separate, widely placed in middle). Ventral segments 

 smooth, first not punctate near coxa?, apical with two setigerous 

 punctures on each side of anus. In all other respects similar to 

 Notonomns. 



Length 16, breadth 5-8 mm. 



Hah. — Mountains at source of Ovens River, Victoria. (A 

 single specimen sent to me by the Rev. Thos. Blackburn.) 



This is an isolated species showing no very close attinity, or 

 even resemblance, to any other Australian Feronide that I know ; 

 its position seems to be between the sub-genera Notonomus and 

 Sarticus, and it makes a link between them that points to the 

 necessity of merging both with the genus Pterustlchus. The 

 form of the prothorax separates it from any species hitherto 

 attributed either to Notononias or Sarticus ; the lateral Ijorder 

 does not extend past the basal angles to form a reflexed margin 

 behind the lateral basal impressions, as it does in all the species 

 of Sarticus, but it is far more widely reflexed than in any species 

 of Notonoinus ; the l^asal angles, too, are marked, though rounded 



