1900.] Catalogue of the Coleoptcra of South Africa. 335 



striate with the intervals very closely and deeply punctured, eighth 

 stria carinate from the base to one-third of the length. The typical 

 form is smaller than the great development, the cephalic horn is 

 very short and sharply conical, and the two horns of the prothorax 

 are also much less developed. 



Female : Head not emarginate in front, and with a very small 

 conical tubercle in the centre ; prothorax with a short, not very 

 pronounced transverse ridge, posterior part with a median longitu- 

 dinal impressed line not very well defined, the whole surface is 

 covered with closely set granules without any smooth area ; elytra 

 as in the male. 



Length 19-25 mm. ; width 12-15|- mm. 



The ^ of this species is differentiated from that of G. tricornutus 

 and C. clubius b) the cephalic horn slanting in a much more 

 horizontal direction, and being placed in the anterior part of the 

 head ; the horns of the prothorax are much more apart at base, 

 shorter and more diverging, and the posterior part has no smooth 

 space ; the intervals of the elytra are very closely and deeply 

 punctured, and the clypeus is much more deeply emarginate ; the 

 ? is distinguished by the absence of smooth spaces on the posterior 

 part of the prothorax. 



Hab. Transvaal (Pretoria), Natal (Durban), Southern Ehodesia 

 (Zambesi River). 



Boheman seems to have had at his disposal only the small 

 development of the male. 



Cathaksius laticeps, Bohem., 

 Plate XXXIII., figs. 23, 23a, 24, 24a. 

 Insect. Caffr., ii., p. 221. 

 G. harpagtis, Har. Mitt. d. Munch. Ent. Ver., 1872, p. 97. 



Black, shining. 



Male : Head semicircular, clypeus not emarginate in front and 

 covered with closely set, transverse, elongate, shallow fovese, genae 

 not projecting beyond the lateral edge of clypeus, in the centre is a 

 long, slender, vertical horn 10 mm. long, straight for three-fourths 

 of the length and curving slightly backwards towards the tip, 

 smooth and rounded in the anterior part, broadly but not deeply 

 grooved, and with the edges of the groove jagged towards the middle 

 in the posterior part, the head is quite smooth, the clypeus and only 

 the edge of the gense being foveolate ; prothorax very sloping in front, 

 strongly and sharply bi-dentate on the upper part of the declivity ; 



