118 REVISION OF SYMPETES AND HEL,EUS, ETC., 



slightly reflexed at sides, margins narrowing behind middle 

 (caused by slight bulging of disc); underside very nitid, strongly 

 longitudinally strigose, apical segment of abdomen finely 

 punctured; prosternum arched, sharply carinated throughout its 

 whole length; tibiae and tarsi thickly clothed with fulvous hair. 

 Dimensions ^ ■20-5 x 13 mm : ^ 22 x 14 mm. 



Ilab. — Rockhampton and Gogonga, Queensland. 



I received the ^ specimen from Mr. H. Brown, who took it at 

 Gogonga; since then Mr. C. French has sent me another specimen 

 from Rockhampton, which proved to be 2- Compared with P. 

 Walkeri Br., it is far more convex; seen sideways, a vertical line 

 to its highest point from the elytral margin measures about 

 6 mm., wliile a similar line in /'. Walkeri Br., measures 3 mm. 

 Its outline, seen thus, is a strong oval with its posterior part 

 steeper, the prothorax and head forming a continuous curve with 

 the elytra. This character, combined with its deeply and almost 

 evenly striated elytra and comparatively narrow elytral margins, 

 make this s{)ecies easy to identify. Types in author's coll. 



Pterohel^us undulatus, n.sp. 



Widely ovate, moderately convex, glabrous, opaque, piceous, 

 the margins paler, underside reddish, epipleurse, antennae, and 

 legs ferruginous. 



Head : labrnm emarginate, ciliate in front, punctate above; 

 epistoma widely bisinuate, with apex concave, not reflexed in 

 front and but slightly raised at sides; angles widely rounded, 

 limiting suture, strongly indented at sides and base, a little pro- 

 duced forward in middle and extending to the sides; antennal 

 orbits almost continuous with sides of epistoma, little raised and 

 abruptly constricted behind, front gently sloping toward suture; 

 entirely smooth and impunctate; antennae extending to base of 

 prothorax, stout, third joint less than fourth and fifth combined, 

 apical four joints transverse and oval, eleventh elongate-ovoid, 

 bluntly rounded at apex. Prothorax (4xll'5mm.), length 

 measured in middle, width at base; depressed, arcuate-emarginata 

 at apex, anterior angles widely rounded and produced to middle 



