216 REVISION OF PTEROHEL^US (fOntd.) AND SARA(iUS, ETC., 



* B. Form depressed, elongate-ovate, base of pronotum truncate 

 or arcuate, hind tarsi longer tliau in A. 

 4. Colour opaque brown-black 



5. Pronotum subcordate, elytral intervals sharp, l'2-14nim. long. 



striatus Cart. 



6. Pronotum narrower, elytral intervals rounded, 16-17 mm. long 



Jacknoni Cart. 



7. Colour nitid brown-black, 13-15 mm. long acaciensis, n.sp. 



Cardiothorax bisulcatus, n.sp. 



Elongate-ovate, bright golden-bronze, very nitid, body 

 beneath and femora iridescent with violet and copper reflec- 

 tions. 



Head : labrum emarginate, epistoma pointed in the 

 middle, with a setiferous puncture on each side, frontal 

 impression rather square, with one or two punctures near its 

 base, the whole surface microscopically punctured ; antenucC 

 long and slender, joints 4-10 gradually enlarging and cup- 

 shaped, eleventh ovate-acuminate. Prothordr, 3x4^ mm., 

 length measured in middle ; widest at middle, arcuate-emar- 

 ginate at apex, subtruncate (or slightly non-coarctate) at 

 base, anterior angles prominent and acute, sides evenly 

 rounded, meeting base without dentation or sinuation at an 

 obtuse angle, extreme border narrowly raised at sides, less 

 evident, but existent, at base and apex, margins moderately 

 foliaceous (as in G. ceneus Bates), separated from disc by 

 sulcus, and bearing two setiferous punctures on each margin ; 

 disc canaliculate throughout, a fovea on each side at base, 

 and one or two vaguely defined foveae on each side of central 

 line, the whole microscopically punctate. Sciitellum oval. 

 Elytra oval, shoulders oblique and widely rounded, epipleural 

 fold scarcely evident ; disc with two deep sulci, continuous 

 from base to apex, one on each side of the suture, and four 

 or five vaguely defined striae becoming obsolete towards the 

 sides and apex, the interval between sulcus and suture con- 



Group B will probably be found to require a new generic title. 



