1900.] Catalogue of the Coleoptera of South Africa. 495 



tibiae have above the basal outer tooth only three serrations, the 

 teeth of which are somewhat obtuse in my examples. I regret 

 that I did not, at the time I examined it, note this character in the 

 type. 



Length 10 mm. ; width 7 mm. 



Hah. Southern Ehodesia (Victoria Falls) Mozambique (Tette). 



CH^TOCANTHUS, n. gen. 



Mentum slightly concave and in the shape of an inverted, broadly 

 truncate cone, not emarginate in the middle at tip and densely 

 bristly ; ligula long, very broad and very deeply incised, but not 

 quite bi-lobate ; second joint of labial palpi swollen and as long as 

 the apical one which is narrower and much more cylindrical, pal- 

 pigers strongly developed, sub-quadrate ; maxillae short, massive, 

 apical lobe long, closely ciliate, inner lobe briefly ciliate and having 

 at the tip a strong, hooked tooth, apical joint of maxillary palpi 

 nearly as long as the two preceding, almost cylindrical, and rounded 

 at tip ; eyes not divided by the canthus of the genae, and showing as. 

 much on the upper side as they do on the under side : labrum 

 narrow, transverse, not covering the mandibles which are com- 

 pressed, arcuate, sharp at tip, and have a strong inner tooth ; head 

 simple ; suture of genae invisible ; antennae nine-jointed, third to 

 sixth joints of equal width and pressed against each other, club 

 lenticular, three- jointed ; prothorax slightly ampliated diagonally 

 from the apex to the base which is moderately arcuate with the 

 outer angles sharp, and is distinctly marginate ; scutellum not very 

 long, rounded at tip ; elytra oblong, elongate, moderately convex, 

 very indistinctly striate, and without any trace of epipleura; pygidium 

 vertical, triangular, partly covered by the elytra ; abdomen six-seg- 

 mented, segments convex, not contracted at middle, and all of equal 

 width except the apical one which is narrower ; metasternum mode- 

 rately broad, intermediate coxae contiguous, carinate inwardly, pos- 

 terior ones not contiguous ; anterior tibiae with two very large and 

 very long outer teeth and very closely serrate above the digits, apical 

 spur a little longer than the apical outer tooth, curving outwardly in 

 the same direction, but much narrower ; intermediate tibiae strongly 

 emarginate in the upper part and sharply dilated at tip, bi-carinate 

 and bi-dentate above the median part, and having two long, flattened 

 apical spurs which are not of equal length and are densely fringed 

 with long ciliae ; these spurs are somewhat blunt at the tip and a little 

 shorter than the tarsi ; posterior femora very compressed and dilated 



