49-i Transactions South African Pliilosophical Society, [vol. xii 



marginate, head finely and closely punctured except along the base 

 where there is a narrow, transverse, impunctate area ; prothorax 

 diagonally ampliate from the anterior angle to the posterior which 

 is sharp, moderately convex on the upper part, distinctly marginate 

 all round, finely and moderately closely punctate, the punctures 

 being less numerous and a little more scattered on the median part, 

 the base is arcuate and very slightly sinuate near the outer angle ; 

 scutellum triangular, slightly aciculate ; elytra elongate, slightly 

 ampliate laterally from about the median part, convex, distinctly 

 marginate, the suture is a little raised in the posterior part, and 

 there is on each side seventeen or eighteen series of closely set, 

 round, shallow punctures ; abdomen and legs sparsely ciliate, meta- 

 sternum with a faint median longitudinal impressed line ; anterior 

 tibiae tridentate outwardly with the basal tooth very short, and having 

 two or three ill-defined serrations above it. 



Length 6-9 mm. ; width 4-4^ mm. 



Hah. The whole of Cape Colony, Natal, and Transvaal, Mozam- 

 bique (Louren9o-Marquez, Eikatla), Southern Ehodesia (Salisbury, 

 Buluwayo, Enkeldoorn), Damaraland, Ovampoland. It occurs also 

 in Southern Europe, North America, the Guinea Coast, Senegal, 

 Northern Africa, Abyssinia, Somaliland, Boran Galla, Zanzibar, &c. 



Hybosorus euficornis, Bohem., 

 Insect. Caffrar., ii., p. 369. 



But for the size, which is considerably larger, this species is similar 

 to the preceding one, except that the basal part of the prothorax is 

 very much more deeply sinuate laterally near the outer angle, and 

 that the anterior tibite have four or five distinct serrations above the 

 basal outer tooth. 



Length 10-13 mm. ; width 6^-8 mm. 



Hah. The whole of South Africa, with the exception of the Cape 

 Colony, so far as I know. 



Hybosorus crassus, Klug, 



Monatsb. Berl. Acad., 1855, p. 657. 



Size, colour, and shape of small examples of H. ruficornis, but 

 distinguished by the much rougher punctures of the head and by the 

 more closely set and deeper punctures on the prothorax ; the anterior 



