1904.] Catalogue of the Coleoptera of South Africa. 191 



joint very small, second sub-cylindrical and a little longer than the 

 third, which is acuminato-ovate ; mandibles very robust, triquetrous 

 outwardly, curved, hollowed inwardly and sometimes bi-dentate at 

 the tip ; maxillae robust and having a brush of fulvous hairs at the 

 tip of the inner lobe, and ending in two robust, not much curved, 

 strongly bifid teeth at the top and a double one lower down ; maxil- 

 lary palpi moderately long, the ultimate joint nearly cylindrical and 

 truncate at the apex, but occasionally slightly swollen towards the 

 base and sub-acuminate at the tip (ciliata, crinita, &c.) ; antennae 

 10-jointed, the 3-jointed club nearly as long or longer than the 

 pedicel in the male, shorter and either ovate or elongated in the 

 female ; head broad or moderately broad, clypeus vertical in front, 

 like the strongly developed labrum, with the anterior margin slightly 

 reflexed and more or less broadly truncate or slightly sinuate, and 

 having sometimes a longitudinal median raised line, there is always 

 a clypeal, sharply raised keel * set very close to the frontal suture, 

 which disappears very often, especially if this clypeal keel is not 

 arcuate, and in addition there is another keel on the base of the 

 vertex, which is, however, always less sharp than the clypeal one, 

 and is occasionally grooved ; the prothorax is sinuate in front and 

 behind, always narrower in the anterior than the posterior part, 

 ampliated past the middle if seen from above, and either rounded 

 there and narrowed thence towards the base which is either angular 

 or broadly rounded, or nearly straight thence to the sharply angular 

 base, it is convex, covered with punctures, either round, cicatricose, or 

 with scabrose edges, the outer margin is always more or less sharply 

 serrate and has a fringe of long setae, and the base occasionally a 

 much denser fringe ; the scutellum is more or less sharply ogival, 

 and has one or more lateral series of foveolate punctures, it is often 

 a little more acuminate in the male than in the female ; elytra not 

 broader at the base than the prothorax at its widest part, sinuate 

 laterally before the middle, more or less ampliated thence towards 

 the posterior part, convex, covering one-half of the propygidium, 

 covered with deep, equi-distant punctures, marginate all round and 

 having a somewhat narrow epipleural fold, the outer margin has a 

 fringe of somewhat remote setae, diminishing in size from the base to 

 past the median part, but one species (S. globator) has in the posterior 

 part a thick, brush-like fringe of fulvous hairs ; pygidium broader 

 than long, arcuate at the base, semicircular, more or less deeply 

 punctured, glabrous all round; penultimate abdominal segment 

 often wider than the antepenultimate, ultimate one either narrow or 

 comparatively broad, and having a fringe of short or long hairs along 

 * In 8. bar da this keel is very indistinct. 



