1904. ] Catalogue of the Coleoptera of South Africa. 187 
but only slightly emarginate in G. namaquensis ; apical joint of labial 
palpi ovatulo-acuminate ; maxille very robust, arcuate, armed at 
apex with two sharp teeth and a trifid one below; apical joint of 
maxillary palpi somewhat thickly fusiform and having an elongate 
impression outwardly ; maxille strongly hooked, almost falcate at 
the tip and having a very plain, sharp, inner median tooth ; labrum 
strong, vertical, broadly incised; clypeus semicircular, head with a 
clypeal suture and a frontal slightly raised ridge ; eyes large, divided 
on the upper side by a setulose canthus reaching to about one-half 
of the exposed part ; antennz 10-jointed, first joint long, triangularly 
thickened at the tip, second a little less than half the length of the 
basal one, swollen outwardly at apex and set near the inner edge of 
the first, the three following moderately short, equal, sixth and 
seventh vertically compressed, antennal club tri-jointed, the joints 
lamellate, and only a little shorter than the whole stalk; prothorax 
moderately convex, ampliated and rounded laterally in the middle, 
moderately bi-sinuate at apex and base, and with the outer angles 
rounded ; scutellum cordate; elytra slightly narrower at the base 
than the base of the prothorax, moderately yet distinctly ampliate 
laterally before the median part, somewhat convex, not costulate or 
striate except for the sutural stria, and covering only the base of the 
propygidium ; pygidium sub-vertical, slightly convex ; pectus clothed 
with a very dense, long pubescence ; anterior tibiz sharply tri-den- 
tate ; intermediate and posterior ones with only one oblique ridge, 
apical spurs of hind tibie laminate and with the upper one con- 
spicuously dilated in both sexes; tarsi somewhat elongate, but not 
longer than the tibie in G. namaquensis, the apical part of the basal 
joints of the anterior pair spinose inwardly; claws long, slender, 
hooked, and having past the middle a short vertical tooth which 
seems to form the angle of the slightly broadened basal part. The 
female is distinguished from the male by the shorter antennal club 
and the somewhat more spatuliform upper spur of the hind tibie. 
The genus is represented in South Africa by four species greatly 
resembling each other, but differentiated also by the shape of the 
genital armature of the male. They seem restricted to the arid 
districts of the Cape Colony. 
One species however, has been recorded from Abyssinia. 
Key to the Species. 
A?. Clypeus semicircular in front. 
Very light flavous; prothorax clothed with long, dense, flavous 
airssaters: very long 9 5.) sec ee) ce ee) eee we taper. 
Testaceous ; prothorax glabrous above ; tarsi somewhat short..  namagquensts. 
