1900.] Catalogue of the Coleoiitera of South Africa. 517 



HeTEEONYCHUS NIGER, Klug, 



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



Very closely allied to the preceding species, but larger and also 

 broader in proportion ; the head is similar in shape and sculpture, 

 although the anterior part is slightly granulose ; the attenuation of 

 the anterior part of the prothorax is shorter, and the posterior part 

 is not quite so parallel ; the elytra are more distinctly ampliate past 

 the lateral sinuation, and have a much broader appearance, the 

 punctate striae are similar, but are much more obliterated towards 

 the base, and the punctures on the dorsal intervals, which are slightly 

 aciculate and not smooth, are hardly distinct ; the propygidium has 

 three fine median longitudinal lines edging and dividing the very 

 fine, transverse stridulating folds ; the pygidium has a shagreened 

 basal, transverse band extending over one-fourth of the width, the 

 remainder being quite smooth ; the fold of the pygidium, which is 

 very distinctly carinate and wide, has a broadly triangular impression 

 in the median part ; the anterior tibiae are as in the preceding species, 

 but the inner claw of the anterior tibiae of the male is more emargi- 

 nate outwardly. 



Length 18-20 mm. ; width 10-11 mm. 



Hah. Mozambique (Rikatla). 



My examples are a little smaller than King's type, and the cephalic 

 tubercles are more developed. The genital armature is of the same 

 shape, but a little broader in proportion to the size. 



Heteronychus infrictus, n. spec, 

 Plate XL., fig. 2. 



Black, very shining on the upper side, chestnut-brown underneath ; 

 head with a distinct median depression, frontal carina distinct laterally 

 in front of the eye, but obliterated from there, clypeal carina distinct 

 laterally and produced on each side into the median part into a short, 

 triangular, aculeate projection or small tubercle, the median impres- 

 sion and the clypeus are rugosely shagreened, and the clypeus is 

 distinctly and sharply bi-dentate ; prothorax impunctate, little convex, 

 slightly attenuate laterally for about one-third of the length, and 

 nearly, but not quite, parallel from there ; scutellum impunctate ; 

 elytra a little ampliate past the ante-median lateral sinuation, very 

 weakly punctato-striate in the dorsal part and with the second 

 stria nearly obliterated at some distance from the base, supra-lateral 

 striae and intervals, as well as the posterior rounded part, deeply and 

 closely foveolato-punctate, there is no puncture on the anterior part 



