400 STUDIES IN AUSTRALIAN ENTOMOLOGY, XVI., 



It is closely allied to C. cupricoUis Chaud., from New Guinea, 

 which is unknown to me in nature; but the Australian species 

 evidently differs by the shorter, stouter apical mucros of the 

 elytra. It is the only Australian species which has a median 

 stripe of hair extending nearly to the apex of the aljdomen, but 

 this feature is found in some allied species from New Guinea. 



Having all the Australian species of Catascopus before uie, it 

 seems well to tabulate them : — 



A. Elytra not spinose at apex; outer apical angle rounded. Pro- 

 thorax with lateral margins narrow J C. elegans Fabr., 



( var. (nistrcdasice Hope. 



A A. Elytra spinose at apex; outer apical angle spinose or angulate 

 Prothorax with lateral margins wide. 



B. Elytra with inner apical angles obtuse C. chaudoiri Castla 



BB. Elytra with inner apical angles mucronate. 



C. Form elongate; prothorax wittout any seta at anterior 

 angles; elytra with outer angles strongly and sharply 



mucronate C. brevispinosus SI. 



CC. Form wide; prothorax with several setse at apical angles; 



elytra with outer angles merely angulate C. laticollis Macl. 



HOLCODERUS CiERULEIPENNIS, n.sp. 



Head large(2-l mm. across eyes); prothorax small, transverse, 

 subangulate at widest part, 3-setose on each side, punctate along 

 sides, deeply and widely longitudinally sulcate in middle; elytra 

 parallel on sides, punctate-striate, interstices convex, third 3- 

 punctate, seventli narrow, apex deeply and roundly emarginate 

 at extremity of fifth interstice. Upper surface metallic; head 

 cseruleous, black on anterior part of front and on clypeus; pro- 

 thorax coppery; elytra blue; under surface and legs black;, 

 antennae and palpi reddish-piceous. 



Head narrowed behind eyes, raiher depressed towards clypeus; 

 vertex Isevigate; front lightly and widely biimpressed, the 

 impressions bounded externally by a ridge. Prothorax broader 

 than long (1-7 x 2*8 mm.), widest about anterior third, obliquely 

 narrowed to apex, wider across base(2 mm.) than apex(l-8 mm.), 

 lightly convex, a little depressed on each side of median sulcus; 

 surface beset with very tine scattered punctures becoming dis- 



