230 Transactions South African PhilosojjJiical Society, [vol. xii. 



Onthophagus incertus, n. spec. 



A very close ally of the preceding species, from which it differs hy 

 the colour of the head and prothorax which are bronze green, and of 

 the elytra, which are also bronze but slightly infuscate and have at 

 the base three elongate flavescent patches on each side on the 

 second and fourth and between the sixth and seventh intervals, and 

 a posterior transverse one reaching from the second to the third or 

 fourth intervals at a short distance from the apex, the transverse 

 carina on the vertex is straighter and truncate at both ends in the 

 female, and the bi-tuberculate carina of the anterior part of the 

 prothorax projects more above the retuse part. 



Male unknown. 



Length 6 mm. ; width 3i mm. 



Hab. Ovampoland (Omrramba). 



Onthophagus obtutus, n. spec. 



Head and prothorax bronze or bronze green, little shining, densely 

 but briefly pubescent, elytra light chestnut brown, slightly infuscate in 

 the median part, antennae piceous red, club infuscate ; head roughly 

 punctulate in the female, but nearly smooth in the centre in the 

 male, genas attenuate diagonally from the base, clypeus acuminate, 

 very slightly blunt at tip, not emarginate and distinctly depressed 

 along the anterior margin which is raised, frontal carina distinct in 

 the female only ; prothorax carinate all round, moderately convex, 

 slightly aculeate in the median part of the base, covered with very 

 closely set, scabrose punctures, clothed with a dense pubescence, 

 and having in the posterior part a longitudinal narrow sulcus and 

 a basal impression ; elytra ampliato-ovate, narrowly and not deeply 

 geminato-striate, intervals nearly plane, and filled with very minute 

 briefly setigerous granules, second interval broader than the third ; 

 pygidium feebly punctulate ; metasternum with a broad, median, 

 longitudinal smooth space without impressed line ; anterior tibite 

 briefly spinose inwardly at tip in the male, apical spur moderately 

 slender, nearly straight in both sexes. 



Male : Head with an arcuate, highly raised carina nearly equi- 

 distant from the base and the anterior part of the clypeus ; anterior 

 part of prothorax vertical, deeply bi-impressed in the centre, having 

 in the middle a blunt, vertical tubercle dividing the two impressions, 

 and a smaller but sharper one on the outer edge of the impressions ; 

 in the minor development the prothorax is hardly retuse, and has 

 four small tubercles in the anterior part, of which the two median 

 ones are set close to one another. 



