1904.] Catalogue of the Goleoptera of South Africa. 187 



but only slightly emarginate in G. namaquensis ; apical joint of labial 

 palpi ovatulo-acuminate ; maxillae 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 ; maxillae 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 ; antennae 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 tibiae sharply tri-den- 

 tate ; intermediate and posterior ones with only one oblique ridge, 

 apical spurs of hind tibiae laminate and with the upper one con- 

 spicuously dilated in both sexes ; tarsi somewhat elongate, but not 

 longer than the tibiae 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 tibiae. 



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 beer; recorded from Abyssinia. 



Key to the Species. 

 A 2 . Clypeus semicircular in front. 



Very light flavous ; prothorax clothed with long, dense, flavous 



hairs ; tarsi very long dispar. 



Testaceous ; prothorax glabrous above ; tarsi somewhat short. . namaquensis. 



