BY THOMAS G. SLOAN E. 455 



Head sraooth, lightly and widely impressed on each side of 

 ifront; eyes convex, reniform. Prothorax broader than long 

 (1-4 X 2 mm.), widest at anterior marginal puncture, rounded on 

 sides, more strongly so to apex than to base; anterior margin 

 lightly emarginate, finely bordered; anterior angles obtuse; base 

 arcuate-truncate; basal angles obtuse; lateral margins wide, 

 wider towards base than apex, very wide and upturned at basal 

 angles; lateral basal impressions deeply concave, wide, margined 

 externally by the explanate lateral margins; disc rather convex, 

 strongly canaliculate. Elytra ovate (4'7 x 2*8 mm.); humergtl 

 angles rounded; apical curve lightly obliquely sinuate on each 

 side, apex itself rounded; strife deep, simple; third iirterstice 

 ■with a fine puncture near third stria at anterior fourth, and two 

 other similtir punctures near second stria on posterior half; 

 eighth interstice a little wider than ninth on' sides, narrow and 

 convex towards apex. Anterior tarsi of ^ with three basal 

 joints dilatate and squamulose beneath; fourth joint small, sub- 

 emarginate; four posterior tarsi with fourth joint small, entir^; 

 ungues simple. Length 7, breadth 2-8 mm. ■ 



Hab. — Q.: Kuranda(Dodd). Coll. Sloane. 



This species is readily separated from all the other described 

 Australian species by its convex elytral interstices. It is very 

 different from P. cooki SI., by its wider prothorax, more widely 

 margined, posterior angles not marked; elytral interstices nofc 

 depressed, punctures ot third not foveiform; eyes less prominent, 

 etc. From the description of the Papuan species, P. jjapuensis 

 SI., it offers the following evident differences — legs and antennae 

 not " pitchy black "; posterior angles of prothorax not marked, 

 elytral interstices not " flat." 



Platynus porphyriacus, n.sp. 



"Winged, oval, subdepressed; prothorax small, subquadrate; 

 •elytra strongly striate, third interstice 3-punctate, eighth 

 depressed at apex; tarsi with fourth joint small, entire, fifth joint 

 setulose beneath. Elytra purple(of a dark tint), reflexed margins 

 dark piceous; prothorax and head black; vertex, mandibles. 



