1900.] Caialofiiic of the CoIcopUmi of SoutJi Africa. 493 



which is ;Uso sharp; the iUiteiior part is sHghtly l)i-simuile and 

 broadly inarginate, while the base, which is marginate like the outer 

 sides, is sinuate close to the outer angle ; scutellum moderately long, 

 triangular ; elytra elongate, oblong, convex, multi-striate, covering the 

 pygidiuni and also the abdomen ; epipleura nan-ow, almost grooved 

 in the posterior part ; abdomen six-jointed, apical joint alone free ; 

 coxse contiguous, except the intermediate ones which are divided by 

 a narrow sulcus; legs robust; anterior tibias tri-dentate outwardly, 

 serrulate above the digits, .and having a strong apical spur set in the 

 rounded inn3r angle, intermediate and posterior tihia> broadly 

 carinate on the upper side and having a very distinct transverse 

 median ridge, dilated at tip, where they are not deeply scooped, but 

 ciliate all round, and having two slightly compressed spurs set in the 

 inner angle ; tarsi shorter than the tibiie, somewhat thick, except the 

 anterior ones, and with the four basal ones nearly of equal size, claws 

 simple. The valves of the penis seem to be bitid owing to the median 

 membrane becoming chitinous at the tip, and being produced there into 

 a deeply sinuate lobate lamina running parallel with the valves when 

 open (plate xxxviii., figs. 38, 39). 



The species of this genus are said to occur in sandy spots, and ai'e 

 very commonly caught at camp-fires, or at lights during thundery 

 weather. They are easily recognised owing to the shining body 

 and the numerous/punctate stria of the elytra. 



The genus is represented in Europe,' Northern America, Syria, 

 India, and Africa (Senegal, Central Africa, Abyssinia, the Galla 

 country, and Sierra Leone). 



Kaj to the Species. 



Protliorax with fine, not closely set punctures, base slightly 

 sinuate near the outer angle ; anterior tibias with three obtuse serrate 

 teeth above the digits illigcri. 



Prothorax with fine, not closely set punctures, base very deeply 

 sinuate near the outer angle ; anterior tibiae with four or five distinct 

 serrate teeth above the digits ruficornis. 



Prothorax with deep, closely set punctures, base very deeply sinuate 

 near the outer angle ; anterior tibise with somewhat obtuse serrate 

 teeth above the digits grossu.s. 



Hybosokus illigeki, Reich., 

 Annals Soc. Entom. d. France, 1853, p. 88. 

 Piceous black on the upper side, piceous red beneath, glabrous 

 above, shining, antennae flavous ; clypeus semicircular, slightly 



