286 Mr. F. P. Pascoe on new Genera and Species of 



behind the antennary ridges ; the clypeus very convex, its su- 

 ture above indistinct, but forming a well-marked groove on 

 each side ; the eyes widely apart ; prothorax not broader than 

 the elytra at their base, much longer and narrower than in the 

 last, the basal fovea? represented by a large shallow depression 

 on each side ; scutellum transversely triangular, the sides 

 curvilinear ; elytra gradually narrowing from the base, the 

 sides of the disk not contracted, seriate-punctate, the intervals 

 of the rows not raised, the punctures rather small, the expanded 

 margins of nearly equal breadth, or only very gradually nar- 

 rowing behind, the suture raised as in the last ; body beneath 

 and legs glossy chestnut-brown ; antennas glossy ferruginous. 

 Length 8| lines. 



Pterohelceus dispar. 



P. breviter ellipticus ( J ), oblongo-obovatus ( $ ), piceus, nitidus, 

 marginibus dilutioribus ; oculis haud distantibus ; elytris basin 

 versus parallelis ( c? in medio paulo latioribus), lineis elevatis 

 nullis. 



Hah. Swan River. 



Shortly elliptic in the male, oblong-obovate in the female, 

 shining pitchy brown, the margins much paler ; head rather 

 narrow in front ; clypeus convex, its suture rather indistinct ; 

 the eyes not remote ; prothorax shorter proportionally in the 

 male, the basal foveas shallow, between them opposite to the 

 scutellum an indistinct groove ; scutellum triangular ; elytra 

 nearly parallel at the sides, and not broader than the prothorax 

 in the female, broader in the middle in the male, finely seriate- 

 punctate, the intervals without raised lines, the suture not 

 elevated, the expanded margins of nearly equal breadth at the 

 sides, and a little reflected at the edge ; body beneath and fe- 

 mora dark chestnut -brown, shining ; antennas, tibias, and tarsi 

 paler. Length ( $ ) 7, ( ? ) 9 lines. 



Helams squamosus (Howitt's MS.). PI. XII. f. 4. 



H. oblongus, parallelus, ferrugineo-fuscus, opacus, sparse fulvo- 

 squamosus ; elytris sing, unicostatis. 



Hah. Cooper's Creek ; Darling River. 



Oblong, parallel at the sides, impunctate, rusty-brown, 

 opaque, sparsely covered with fulvous hairs simulating scales ; 

 head a little prolonged anteriorly ; clypeus rounded ; prothorax 

 rather transverse, with a strongly marked carina in the middle, 

 the foliaceous margins broad and reflexed ; scutellum trans- 

 versely triangular ; elytra moderately convex, depressed along 

 the sutural region, the suture finely raised, and near it on each 

 side a strongly marked carina, which terminates abruptly at a 



