1907.] Catalogue of the Coleoptera of South Africa. 327 



B 1 . Anterior margin of prothorax not angular nor sub- 

 dentate in the centre. 



a 2 . Intermediate tibiae uni-spinose on the upper side. 



ft 1 . Elytra bi- or pluri-costate. 



Clypeus quadrate, outer angles sharp, fore margin 

 reflexed, simple. 



c 4 . Inner lobe of maxillae simple, upper lobe with a 

 bifid hamate tooth. 



Prothorax strongly arcuate above the scutellum ; 



elytra pluri-costate Tetragonorhina. 



c3. Inner lobe of maxillae simple, upper lobe with two 

 superposed teeth. 



Clypeus attenuate in front ; elytra uni-costate . . Psacadoptera. 



c 2 . Inner lobe of maxillae dentate, upper lobe with two 

 teeth. 



Clypeus bi- or quadri-dentate in front Anoplochilus. 



Clypeus sub-parallel, simple in front ; body very 



densely villose Sisyraphora. 



Clypeus rounded laterally in front ; prothorax 



densely villose Goraqua. 



a 1 . Intermediate tibiae bi-spinose on the upper side. 



b 2 . Elytra with the humeral callus continued as a 

 costa, obliterated past the median part. 



c 1 . Maxillary lobes inermous. 



Clypeus sub-parallel, deeply emarginate in front . . Trichostetha. 



b 1 . Elytra normally costulate. 



Clypeus attenuate in front, the margin bi- or 

 quadri-dentate Odontorrhina. 



Gen. XIPHOSCELIS, Burmeister, 

 Handb. d. Entomol., iii., 1842, p. 613. 



Mentum sub-parallel, contracted at the ligular part which is a 

 little narrowed and one-third the length of the mentum, sub-truncate 

 at apex but slightly sinuate in the centre, the labial palpi are inserted 

 at the very apex of the lateral part ; maxillse narrow, mando straight, 

 not ciliate, galea sub-quadrate, surmounted by numerous bristly 

 hairs ; last joint of maxillary palps sub-cylindrical and similar in 

 shape to the labial one; clypeus strongly contracted laterally at the 

 base, not attenuate in front, deeply emarginate with the outer angles 



