BY THOMAS G. SLOAXE. 371 



between inteimediate and posterior coxae, episterna sliort. Basal 

 ventral segments bearing some punctures, three apical segments 

 deeply transversely sulcate and with a deep fovea on each side, 

 apical segment with two foveiform punctures. Length 7, breadth 

 2 "7 mm. 



Hah. — Q.: Atherton. One specimen occurred to me in thick 

 scrub in June, 1906. 



Very different from S. niger Cast., (the other species of the 

 genus Setalis) from which it is easily distinguished by its smaller 

 size, narrower and more convex form, very diJBFerently shaped 

 prothorax, elytra with striae crenulate, &c. It is remarkable that 

 the same unusual conformation of the lateral elytral interstices 

 should occur in two such very different species as S. niger and 

 S. ruhripes. In my description of Loxogmus ohscurus ( — S. niger 

 Cast.), I have said the eighth elytr&l interstice is punctate, having 

 overlooked the true eighth interstice, which only shows in a linear 

 form near the base. In S. niger the seventh interstice also dis- 

 appears about the posterior third, so that the sixth and ninth 

 interstices become contiguous near the apex as in *S'. rubrijjes. 



CosMODiscus, n.gen. 



Mentum not deeply excised; lobes obtuse at apex; sinus oblique 

 on sides, a short wide triangular median tooth at bottom. Falpi 

 stout : labial with penultimate joint bisetose; apical joint short, 

 hardly longer than penultimate, compressed, truncate: maxillary 

 v/ith apical joint short, hardly longer than penultimate, obtuse at 

 apex. Za6?'i<.7;i shagreened, truncate, sexsetose. Alandibles ^hovt, 

 without a seta in outer groove. Ciypeus bisetose. Head small; 

 front deeply and shortly bi-impressed : eyes hemispherical, nar- 

 rowly separated from buccal fissure beneath. Antennce short, 

 moniliform, lightly incrassate; joints 1-3 glabrous, 6-11 com- 

 pressed, first large, about as long as second and tliird together, 

 second shortest. Prothorax widely transverse, wider at base 

 (2*7 mm.) than at apex (2 mm.); basal angles obtuse; apical border 

 entire; two marginal setas on each side, anterior just before middle, 

 posterior at basal angle. Elytra bordered on base, not dentate 



