1904. ] Catalogue of the Coleoptera of South Africa. 75 
Key to the Genera. 
A+. Claws mostly slender, obliquely incised underneath at a short 
distance from the apex, not lobate in the posterior part. 
b?, Clypeus simple, divided from the head by a suture .. .. Ablabera. 
bt. Clypeus with a median keel or raised suture, and a frontal 
QUGE Secs avec eee ers, SG lest woe: cso ater bine ton» DMerocamenta. 
a‘. Clypeus straight laterally, outer angles moderately rounded. 
Frontal suture obliterated, reflexed anterior part edged by 
a fine transverse line .. a Bie oc ag a. icenibe: 
A3, Claws not incised underneath, but slightly dilated at base. 
a3, Clypeus with a median keel and a frontal one, and arcuately 
ROUGE TASS oo ca oo oo oo oo de oo oa Jhoilnagliiar 
A’, Claws with a very broad basal vertically truncate lobe under- 
neath. 
a. Clypeus with a supra-apical keel or raised line, and a 
frontal suture. 
b?. Clypeus not hollowed. 
c3, Gene not projecting; antennz 10-jointed in both sexes .. Camenta. 
c?, Gene not projecting; antenne 9-jointed in the male .. Pericamenta. 
ct. Gene distinctly projecting, antenne 10-jointed in the male, 
G-oimmedtinstihestiemalen wee ee ees) es ke ee © OoCamenta, 
at, Clypeus with two strongly raised keels. 
Genz strongly developed, clypeus notched in front, not 
lnolliong dc age” GNSS) sb. “as esp poe cccu mics Son POU MeO OR 
bt. Clypeus hollowed. 
Clypeus with a median and a frontal suture or slightly 
raised line, 
Genz moderately developed, clypeus rounded in front, not 
MOLCHEd MCE Rei cet ac Ge ste a oe os aracamenta. 
At. Claws with a moderately broad basal lobe. 
a, Clypeus with two high keels. 
Clypeus deeply incised laterally and strongly narrowed in 
inelanteriorspart wae ewan aapes) fc 1s Use ose Lde@camenta- 
Gren. ABLABERA, 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 
