1904.] Catalogue of the Coleojptera of South Africa. 75 



Key to the Genera. 



A 4 . Claws mostly slender, obliquely incised underneath at a short 

 distance from the apex, not lobate in the posterior part. 



b 2 . Clypeus simple, divided from the head by a suture . . . . Ablabera. 



b 1 . Clypeus with a median keel or raised suture, and a frontal 



one Microcamenta. 



a 1 . Clypeus straight laterally, outer angles moderately rounded. 



Frontal suture obliterated, reflexed anterior part edged by 



a fine transverse line . . . . . . . . . . . . Leribe. 



A3. Claws not incised underneath, but slightly dilated at base. 



a3. Clypeus with a median keel and a frontal one, and arcuately 



rounded in front . . .. Tulbaghia. 



A 2 . Claws with a very broad basal vertically truncate lobe under- 

 neath. 



a 2 . Clypeus with a supra-apical keel or raised line, and a 

 frontal suture. 



b 2 . Clypeus not hollowed. 



c3. Genae not projecting ; antennae 10-jointed in both sexes . . Camenta. 



c 2 . Genae not projecting ; antennae 9-jointed in the male . . Pericamenta. 



c\ Genae distinctly projecting, antennae 10-jointed in the male, 



9-jointed in the female Oocamenta. 



a 1 . Clypeus with two strongly raised keels. 



Genae strongly developed, clypeus notched in front, not 



hollow Diplotropis. 



b 1 . Clypeus hollowed. 



Clypeus with a median and a frontal suture or slightly 

 raised line. 



Genae moderately developed, clypeus rounded in front, not 



notched Paracamenta. 



A 1 . Claws with a moderately broad basal lobe. 



a. Clypeus with two high kesls. 



Clypeus deeply incised laterally and strongly narrowed in 



the anterior part Idcecamenta. 



Gen. ABLABEEA, Erichs., 

 Nat. Ins., iii., 1847, p. 695. 



Mentum ampliated laterally, deeply constricted there at the 

 junction with the ligular part which is entirely fused, but bears 

 a somewhat plain trace of a suture, narrowed thence, but expanding 



