1900.] Catalogue of the Colcoptcra of South Africa. 341 



opaqiR', l)ut the latter sliining in front and liehind ; elyt'''!' shining, 

 ebony black ; median part of clypeus very slightly l)i-lol)ate, frontal 

 horn broad, flat, suddenly attenuate towards the apex, styliform, 

 lateral angles rounded ; pronotum finely granulose, with the median 

 part and two round discoidal but posterior spots smooth and nearly 

 impunctate, and having two discoidal ante-median, short, smooth, 

 conical tubercles set close to one another and separated by almost a 

 quarter of the width ; elytra punctato-striate, with the intervals sub- 

 convex and punctulate. 



Length 19-20 mm. 



Female : Very similar, but with the clypeus entire and rounded ; 

 there is a slender frontal carina, with two median tubercles now 

 and then united ; the prothorax, with the exception of the median 

 anterior carina, is totally granulate and has on each side a smoother 

 median furrow. 



Length 18-19i mm." 



Hah. Mozaml)ique (Sena). 



Cathaesius calaharicus, Kolbe, 

 Loc. cit., p. 142. 



"Black, shining, head and prothorax moderately shining, vertex 

 and posterior part of the latter as well as two discoidal moderately 

 large patches smooth ; head broad, clypeus moderately short, 

 rounded in front with the margin not sinuate, transversely rugose, 

 frontal carina transverse, little raised, straight, and produced at 

 middle into a tubercle ; prothorax broadest at middle, pronotum finely 

 and closely granulose, and having two discoidal smooth areas, 

 posterior part of the back sub-sulcate, no ante-median transverse 

 carina, but there is still a faint trace of one ; elytra finely striate, 

 strige indistinctly punctate, intervals smooth, little convex, sparingly 

 and moderately finely punctate." 



Length 23 mm. 



The author compares this species with G.ijhidias $ , from Senegal, 

 of which the nearest ally is C. mclanchoUcus, Boh., and adds : " The 

 species also appears to be nearly related to C. arcolatus, Boh., which 

 is described from the female only." I consider the latter as identical 

 with C. tricornutus, and I have shown that the type is not a 

 female. 



Hat). Kalahari Desert. 



