BY WILLIAM MACLEAY, F.L.S., ikc. 547 



Sub-section IV. 

 Elytra irregularly punctate. 



55. Pterohel^us Kollari, Breme. 



Mon. Cossyph. Vol. I. p. 32, pi. VII. fig. 3. 



Nitid brown, smooth, very convex ; head broad, prominent, 

 strongly punctate j thorax notably transverse, sinuate behind, 

 rounded laterally and very finely punctate, the margins narrow, 

 flat and smootli, the anterior angles scarcely reaching half of the 

 head, the posterior angles prominent and acute. Elytra sinuate 

 at their base, pai-allel-sided for two-thirds of their length, rounded 

 towards the apex, and a little pointed ; the disk nitid, very convex 

 and finely and irregularly punctate, the margins scarcely notice- 

 able. Body beneath nitid brownish-black. 



Long. 7 lines, lat. 4J lines 



Hah. — Swan River. 



56. PterohelvEus glaber, n. sp. 



Ovate, black, nitid, convex. Head rugosely punctate, deeply 

 immersed in the thorax, the lateral angles raised. Thorax twice 

 as broad as long, very finely punctate, the mai-gins rather broad, 

 minutely rugosely-punctate, and much reflected, especially at the 

 anterior angles, the posterior angles pointed backwards. Scu- 

 tellum curvilinearly triangular, with a few small punctui-es. 

 Elyti-a of the width of the thorax and three times the length, 

 convex, parallel-sided, covered with minute rather thinly distri- 

 buted punctures scarcely showing a trace of oi-der or striation, the 

 margins narrow, concave, with a reflected edge, a slight compres- 

 sion on the side of the disk behind the shoulders, not showing on 

 the margin. Undersurface nitid and slightly striolate, presternum 

 granulose, carinate from the apex. 



Long. 7 lines, lat 3^ lines. 



Hah. — Darling River. 



