369 



be tabulated (using their authors' diagnostic characters) as 

 follows : — 



Antennae composed of twelve joints (23) ... ... Scolecobrotus 



Antennae composed of eleven joints. 



First joint of antennae long and thin, sides 



of prothorax straight ... ... ... AethioraW) 



First joint of normal length, sides not straight. 



Elytra with apices rounded (25) ... ... Emenica 



Elytra with apices armed ... .... ... Uracanthus 



Uracanthus gigas, n. sp. 



(3 . Reddish-brown, some parts darker. Densely clothed 

 with short ashen pubescence, denser and somewhat longer on 

 head, prothorax (where it is slightly curly), scutellum, and 

 sterna than elsewhere. 



Head with small and large punctures intermingled on 

 clypeus, clypeal suture partially concealed by clothing; 

 muzzle of moderate length. Antennae with at least two 

 joints passing elytra, fifth to tenth joints obliquely produced 

 to one side at apex, tenth slightly shorter than ninth, and 

 about two-thirds the length of eleventh. Prothorax about as 

 long as the basal width, sides bisinuate and rounded in 

 middle; disc uneven, becoming corrugated towards sides and 

 in front. Elytra moderately wide at base, sides regularly 

 decreasing in width posteriorly, each widely ernarginate and 

 strongly bidentate at apex ; each with three feeble but dis- 

 tinctly elevated lines, disappearing before apex, the outer 

 one before shoulder; with very dense subasperate punctures 

 of two sizes intermingled, but the largest ones rather small. 

 Legs long and thin, basal joint of hind tarsi almost as long 

 as the rest combined. Length, 46-52 mm. 



9 . Differs in being larger (66 mm.), elytra wider and 

 less narrowed posteriorly, abdomen much larger, and legs 

 shorter. 



Hah. — Queensland: Kingaroy (C. French); Western 

 Australia: Middalyd < 26 ) (National Museum, from T. Worr). 



(23) On Uracanthus triangularis and dubius the antennae are 

 occasionally twelve-jointed. 



(24) Its only species, fuliginea (originally referred to Ura- 

 canthus), is unknown to me, as it was to Blackburn. It is fre- 

 quently difficult to deal with Pascoe's genera, unless their typical 

 species are known. 



(25) Judging from the description and figure this is all I can 

 find to distinguish the genus from Uracanthus, and several species 

 of the latter genus have the apical armature so feeble that it could 

 almost he regarded as absent, and from some it is quite absent. 



(26) Possibly a temporary mining camp ; the name does not 

 appear in the latest postal guide. 



