468 Transactions South African Philosophical Society, [vol. xiii. 



anterior part, nearly, but not quite, rectangular in the posterior, very 

 conspicuously quadri-impressed along the base ; scutellum tectiform 

 in the posterior part, not very sharply acuminate at apex ; elytra 

 with the humeral part strongly developed, attenuated towards the 

 side pieces and nearly straight thence to the apical part, strongly 

 unicostate on each side ; mesosternal process very short, sub- 

 aculeate, truncate in front ; anterior tibiae bi-dentate in the $ , tri- 

 dentate in the $ ; inner side of all tibiae briefly and moderately 

 densely pubescent. 



The only species included in this genus was originally described 

 from what was then known as the Zanzibar mainland. 



This species is found on Protea flowers (G. A. K. Marshall). 



Trymodera aterrima, Gerst., 

 Loc. cit., p. 34. 

 Decken's Eeis., Glied., 1873, p. 97 ; pi. vi., figs. 2, 2a. 

 duvivieri, Sch., Mith. Schw. Ent. Ges., 1898, p. 175. 



Completely black and very shiny ; clypeus covered with deep even 

 punctures, closely set, on each side of the clypeus is a moderately 

 deep impression, and two in the anterior part of the head, which is 

 strigillate in front and smooth behind ; prothorax with eight plain 

 impressions, being on each side a juxta-median anterior one not 

 always clearly defined, two lateral, and a supra-basal, the intervals 

 are sparsely punctate, but the impressions are strongly strigillate ; 

 base of scutellum strongly strigillate transversely, the convex part 

 smooth ; elytra with a strong, smooth, tectiform costa beginning 

 near the base and equi-distant from the humeral callus and the 

 scutellum, the suture is conspicuously carinate, the space between 

 the costa and the suture is quite smooth in the anterior part, but 

 faintly bi-impressed and set with cicatricose punctures in fche 

 posterior, while the pai't lying between the dorsal costa and the 

 outer margin bears three or four transverse impressions, is irregu- 

 larly plicate, but bears in addition three short, sub-punctate stria* ; 

 pygidium strigillate ; under side glabrous, very sparingly punctate, 

 the punctures cicatricose. 



The sculpture of this interesting species, which has no ally, 

 closely approximates that of the genus Lcucocelis, which in turn is 

 nearly similar to that of many of the Crcmastochilidcs. 



Through the courtesy of Dr. Standfuss, of the Zurich Museum, I 

 have een able to examine the type of Charadria duvivieri, Sch., and 

 cau thns corroborate its identity with Trymodera aterrima, Gerst. 



