1900.] Catalogue of the Coleoptera of South Africa. 215 



cephalic horn is replaced by a transverse, high laminate carina 

 occupying the half of the vextex ; , the prothorax is less closely 

 granulose ; the elytra are more ampliato-ovate and have no trace of 

 any testaceous maculae; the size is smaller, and the pubescence is 

 denser. 



In spite of these differences, this species might prove to be a mere 

 colour variety of 0. venustulus. 1 have had two small developments 

 of the male only at my disposal. 



Length 4 mm. ; width 2-|- mm. 



Hab. Southern Ehodesia (Manica). 



Onthophagus exiguus, Pering., 

 Trans. S. Afric. Philos. Soc, vol. vi., 1892, p. 30. 



Male : Head, prothorax, and under side bronze, shining, elytra red,, 

 shining, with the suture, a basal median patch, two discoidal ones on 

 each side, and occasionally the posterior margin, fuscous ; head 

 punctate on the clypeus, nearly smooth on the vertex, clypeus 

 rounded laterally, deeply incised in the centre and with the angles 

 of the incision produced into a triangular, slightly curved tooth,, 

 frontal carina very distinct and arcuate, vertex produced into tw^o 

 sharp, vertical horns united by a low% median carina, and having at 

 the base a small, inner tooth ; prothorax moderately convex, 

 marginate all round, rounded at base, declivous in the anterior part, 

 and slightly impressed on each side of the anterior part, it is 

 covered with small granules less closely set in the median and 

 anterior parts than on the sides, and replaced above the base by 

 scabrose punctures, the posterior median part has a shallow groove ; 

 elytra ampliato-ovate, deeply geminato-striate with the intervals 

 slightly raised, and having each one series of broad, distant 

 punctures very briefly setigerous, second interval not wider than 

 the third, humeral callus not particularly distinct ; pygidium deeply 

 but not closely pitted ; metasternum sparsely punctured in the 

 centre, median impressed line not distinct ; anterior tibiae non- 

 spinose inwardly at apex ; apical spur long, nearly straight. 



Length 4 mm. ; width 2-J- mm. 



Hab. Ovampoland (Ojimbora). 



The cephalic horns have nearly the same shape as those of 

 0. venustuhis, and a small inner basal tooth like the one of 0. 

 intermedius ; it is closely allied to 0. ncgulipennis , Fairm., from 

 Somaliland. 



