1902.] Catalogue of the Coleoptera of South Africa. 665 



Teibe ADORETINI. 



Gen. ADOKETUS, Casteln., 



Hist. Natur. d. Insect., ii., 1840, p. 142. 



Mentum sub-parallel or trapezoidal, deeply incised laterally near 

 the point of insertion of the antennae which are inserted in the outer 

 face, narrower thence to the apex, the anterior part of which is either 

 nearly straight but plainly incised in the middle, or slopes a little 

 on each side from the broadly and deeply incised median part, 

 convex, but depressed in the anterior part ; labial palpi short, the 

 apical one sub- cylindrical ; maxillae robust or moderately robust 

 ending at the tip in two arcuate teeth transversally set, the first 

 tooth is disconnected from the second and is more slender, the other 

 one is either bifid, or trifid, but sometimes the three teeth are only 

 slightly connate at the base, maxillary palpi long, apical joint sub- 

 fusiform, not quite as long as the two preceding taken together, or 

 only a little longer than the penultimate one, and obsoletely impressed 

 laterally ; labrum vertical, obliquely attenuate laterally, or triangular; 

 crenulate, mandibles swollen at the base, hollowed inwardly, curved 

 and acute at the tip, and sometimes serrate inwardly ; clypeus 

 declivous in front, edged with a fine, more or less raised margin, 

 either semicircular, rounded in front only, or occasionally sub- 

 truncate, or sub-truncate but emarginate in the middle, shorter and 

 separated from the head by a transverse impressed line, head and 

 clypeus plainly scabrose ; eyes very large, bulging, divided above 

 the median part by the canthus of the genge for a third of the 

 length ; antennae short, slender, ten-jointed, club as long as the 

 five preceding joints taken together ; prothorax twice as broad as 

 long, very little sinuate in front, but more distinctly so along the 

 base the angles of which are somewhat rounded, sides also rounded 

 in the middle and fringed there with bristly hairs ; scutellum as long 

 as broad at the base, ogival, but not very sharply acuminate ; elytra 

 hardly wider at the base than that of the prothorax, slightly ampliate 

 thence for about one-sixth of the length, then sinuate, and a little 

 more ampliated from there to the rounded apical part, they have on 

 each side a distinct stria along the suture and usually four, more or 

 less raised, costules usually with a somewhat regular series of 

 punctures on each side of them ; the propygidium is partly hidden by 

 the elytra, the propygidium is somewhat convex in the middle, and 

 vertical ; anterior tibiae tri-dentate outwardly, basal tooth very short, 

 inner spur long and slender ; intermediate and posterior tibiae with 

 two transverse rows of bristles not always very distinct on the outer 



