116 



REVISION OF SYMPETES AND HELiEUS, ETC., 



anterior angles 3 mm., disc very little wider than each margin at 

 base; circularly emarginate at apex, anterior angles subrect- 

 angular but blunt at tips, sides a little sinuate 

 but rapidly widening to base, posterior angles 

 acute and overlapping elytra, base trisinuate; 

 foliate margins wide, horizontal, with outside 

 part (not extreme edge) slightly reflexed, 

 narrow raised border only apparent at apex, 

 edge (seen sideways) laminate ; disc rather 

 flat, central line indicated by depression near 

 centre and base,two large irregular depres- 

 sions near sides at base, disc and margins 

 finely and closely punctured, with some indica- 

 tions of longitudinal lines on disc and oblique 

 wrinkles on margins. Scutellum curvilinear 

 or triangular, coarsely punctate. Elytra wider 

 than prothorax at base, widest near middle, 

 abruptly narrowing to apex, foliate margins 

 very wide, slightly gibbous near humeri, and 

 a little convex for the greater part of width, outside portion- 

 recurved, this portion narrowed and horizontal at base, wider 

 and concave at apex; disc with suture carinate, and six 

 obscure costse ou each elytron becoming obsolete at apex, 

 of these the second and fourth more strongly raised^ wliole 

 surface of disc and margins closely and finely punctate, and a 

 single row of large punctures at junction of margins with disc 

 from base to apex. Prosternum carinate, coxte enclosed by dark 

 raised border, posterior intercoxal process narrowly triangular; 

 abdomen very nitid and minutely punctate, apical segment a 

 little atrigose, under side of margins rather coarsely punctured, 

 tibial spurs shoit, hind tarsi with basal joint as long as the rest 

 tosether. Dimensions 16 x 14 mm. 



Hab. — North-west Australia. 



A single specimen, male, in the Macleay Museum, distin- 

 guished from its congeners by its subcordate form; the deeply 

 immersed head, wide prothorax, and very wide elytral margins 



Fis. 1. 



