1900.] Catalogue of the Coleoj^tera of South Africa. 473 



ten-jointed ; body elongate, cylindrical ; abdomen six-jointed ; 

 pygidium horizontal, partly or entirely covered by the elytra ; 

 anterior tibiae quadri-dentate. 



Gen. CHIEON, McLeay, 



Horae. Entomol., i., 1819, p. 107. 



Mentum broader at base than at apex, rounded laterally, concave 

 at the base of the outer face and convex towards the apex, slightly 

 rounded at tip, and with a transverse row there of stiff" cilise ; im- 

 mediately behind the upper margin of the mentum the labial 

 palpigers are produced into a transverse lamina divided in the centre 

 by a very narrow interval ; ligula hardly visible, bifid and penicillate ; 

 labial palpi long, basal joint cylindrical, half the length of the inter- 

 mediate one which is a little swollen at tip, the ultimate one is 

 longer than the second, fusiform, slightly truncate at tip ; maxillae 

 moderately thick, upper lobe somewhat short, not much dilated, 

 pubescent and having at apex a fringe of dense, long and stiff in- 

 curved ciliae, inner lobe unciform, long and sharp, horny and with 

 a very slight fringe of very short hairs ; maxillary palpi very long, 

 second joint longer than any of the others, straight inwardly, sinuate 

 and broadly swollen outwardly at tip, third strongly clubbed at tip, 

 fourth longer than the third, not quite straight outwardly but a little 

 ampliated and curved inwardly ; antennae nine-jointed, club oblongo- 

 ovate, covered with long, dense hairs, basal joint clubbed at tip, as 

 long as the five following joints ; mandibles very long, flat, nearly 

 semicircular, bluntly bi-dentate and reflexed at tip ; labrum elongate, 

 incised in the centre and sometimes dentate on each side of the 

 incision ; head transverse, genae triangular, projecting beyond the 

 eye; prothorax parallel but not very convex; scutellum long, narrow, 

 sharp at tip; elytra cylindrical but slightly sinuate laterally beyond 

 the humeral part and covering the pygidium which is horizontally 

 declivous, epipleura narrow and distinct only for one-third of the 

 length ; coxae not quite contiguous, prosternum not carinate between 

 the femora, metasternum produced between the intermediate coxae 

 in a sharp triangular process and grooved longitudinally in the 

 centre ; abdomen six-jointed, abdominal segments very narrow in 

 the centre owing to the compression of the long, horizontal pygidium ; 

 anterior tibiae dilated, strongly tri- or quadri-dentate outwardly, 

 oblique at apex and with a long, strong apical spur extending as 

 far as the tip of the apical outer tooth which is not very oblique, 

 intermediate and posterior ones compressed and having three or 



