212 



AUSTRALIAN COLEOPTERA.— Part IV. 



By Albert H. Elston, F.E.S. 



[Read August 9, 1923.] 



Plate XV. 



COLYDIIDAE. 

 Deretaphrus bucculentus, n. sp. 



PI. XV., fig. 1. 



Subopaque, reddish-brown, elytra slightly paler, antennae and legs reddish ; 

 under-surface same colour as above, in parts diluted with red. 



Head subtriangular, eyes entirely concealed from above, with a round, 

 moderately deep depression between antennae, and with dense, comparatively 

 large punctures. Antennae robust, reaching to about the first third of the pro- 

 thorax, the first joint large and globular, the remainder very compact, the last 

 three dilated and forming a club. Prothorax distinctly wider than head, longer 

 than wide, the apex wider than the base, the lateral margins in front curved 

 outwards, and incurved to base, the anterior angles obtuse, the posterior ones 

 acute, almost imperceptibly depressed longitudinally in the middle ; densely 

 punctured, the punctures somewhat larger than those on head, and in places 

 confluent. Elytra wider than prothorax and about two and a half times as 

 long, sides parallel to beyond the middle, then gradually rounded towards apex, 

 base between scutellum and humeral angles carinate ; punctate-striate, the 

 punctures somewhat smaller and less distinct than those on prothorax, the first 

 interstice wide and flat, the remainder carinate. Scutellum small and circular. 

 Under-surface with large, regularly placed punctures, on abdomen more or less 

 arranged in transverse rows, those on fourth and fjfth segments more compact. 

 Legs robust, anterior and intermediate tibiae provided on the outside with four 

 to five small teeth, the posterior ones with only two small teeth near the apex, and 

 all the tibiae, on the outside, furnished with a large apical spur, and on the 

 inside, with a free spur resembling a stout bristle. Length, 8'5 mm. 



Hab. — South Australia: Murray River (A. H. Elston). Type (unique), 

 in author's collection. 



This species is readily distinguished from all previously described ones by 

 the peculiar structure of the head, the basal angles of which entirely conceal 

 the eyes when viewed from above. On the elytra the second and fourth inter- 

 stices are more strongly carinated than the remainder. 



CLERIDAE. 



Orthrius duplopunctatus, n. sp. 



PI. XV., fig. 2. 

 Fuscous; head and prothorax, in the greater part, ferruginous; palpi (in 

 pai'ts infuscated), spot on each shoulder, submedian curved fascia on each 

 elytron, and under-surface of tarsi testaceous. Thickly clothed with depressed 

 white hairs, longer and of a shaggy appearance at sides of prothorax and on 

 legs. Under-surface latericeous to testaceous, part of abdomen slightly infus- 

 cated. Lightly clothed with pale semi-depressed hairs. 



