1907.] Catalogue of the Coleoptera of South Africa. 421 



Group SCHIZOKBHINII. 



Gen. GNATHOCEEA, Kirb., 

 Trans. Linn. Soc, xiv., 1825, p. 571. 

 Amphistoros, Gory and Perch., Monogr. d. Cet., p. 145. 



Body almost glabrous ; mentum greatly elongated, sub-oblong, 

 parallel, with the whole anterior margin deeply scooped, the outer 

 angles sharp, the outer face of the ligular part is convex, and the 

 palps cavities very long and very wide ; maxillae long, somewhat 

 slender, upper lobe short, dentate, and also very stiffly ciliate 

 inwardly; clypeus attenuate in front, carinate laterally, and with 

 the outer angles prolonged in a compressed, acuminate process half 

 as long as the head ; antennal club shorter than the whole pedicel ; 

 prothorax sub-trapezoidal, with the basal angles sub-obtuse, and the 

 base arcuate above the sharply triangular scutellum ; elytra broader 

 than the prothorax, strongly sinuate laterally, slightly attenuate 

 behind, and plainly bi-costate on each side, the suture raised ; the 

 prosternal epimera are greatly reduced, triangular at the top, and 

 vertical ; sternal process very long, conical, curving strongly inwards 

 at the tip. Interior tibiae sharply tri-dentate ; tarsi slender, claws 

 very long; posterior tibiae incurved in the male. 



This genus is easily identified by the shape of the clypeus. 



The species of this genus inhabit Eastern, Western, and Central 

 Africa, but one species originally described from Nyassaland occurs 

 in the north-eastern part of the South African Eegion. 



Gnathocera valida, Jans., 

 Cistul. EntomoL, iii., 1884, p. 105. 



Almost glabrous, black, with the elytra flavo-testaceous or flavous 

 and the antennae and legs rufescent ; the clypeus is longitudinally 

 striolate and the head moderately closely punctate, on the clypeus 

 are two cretaceous white bands and two spots of similar colour on 

 each side of the head ; the prothorax is deeply and irregularly punc- 

 tured and sparsely setulose like the frontal part of the head, very 

 broadly grooved in the centre of the disk, and deeply arcuately 

 emarginate above the scutellum, the longitudinal groove is coated 

 with white, and there is on each side a similar white band covering 

 a quarter of the whole surface ; the very long scutellum is strongly 

 arcuate at the base", broadly grooved in the centre, the groove coated 

 with white ; elytra glabrous, highly bi-costate, the costae smooth, and 

 the intervals filled with closely set, seriate punctures, along the outer 



