1900.] Catalogue of the Coleoptcra of South Africa. 451 



surface of the prothonix has nunievous punctuves not very closely 

 set, and bearing each a short hair ; elytra oblongo-ovate, a little 

 ■depressed in the median basal part, but convex and even gibbose 

 behind, and with the sides nearly vertical, on each side of the 

 suture and under the scutelluni there is a sharp, much raised carina 

 not reaching the median part, the space on each side of this anterior 

 carina is excavate, almost midway between this ridge and the 

 humeral angle there is a conspicuous, somewhat sharp tubercle, 

 the suture is raised, and there are on each side three somewhat 

 slanting, deep, smooth stricc with the intervals rounded and costate, 

 these stria3 reach from the apex to about two-thirds of the length, 

 the surface is glabrous, but in the stride there is a series of remote, 

 whitish, very fine, short setae ; abdomen sparsely setulose ; legs 

 •clothed, especially the tibias, with fine, slightly bristly, whitish hairs; 

 intermediate and posterior tibiae and tarsi compressed, the posterior 

 tibiae are slightly sinuate, but neither the intermediate nor the 

 posterior ones are inflated at tip, the spine of the anterior femora 

 is very distinct, and sub-basal beneath, and the apical part is very 

 ■deeply grooved for the reception of the tibiae. 



Length 3 mm. ; width 1\ mm. 



Hah. Orange River Colony (Bothaville). 



This species differs from the figure of Gorythoderus lorlpes, Klug, 

 by the more elongate head, which is nearly as long as the lateral 

 part of the prothorax, the three strongly costate intervals of the 

 elytra, and the tibiae, which are not swollen at apex, nor scooped 

 inwardly at base. I have, however, seen only one example of 

 C. marshalli, and there may be some sexual differences similar to 

 iihose of C. loripcs, but the length of the head remains a good specific 

 •character. 



Sub-Family TROGIN^. 



Mandi])les robust, not quite covered by the labrura which is 

 vertical ; maxillae robust, corneous, pluri-dentate inwardly ; antennas 

 ten-jointed ; eyes not divided by the canthus of the genae ; clypeus 

 more or less sharply triangular, and seldom with a trace of a trans- 

 verse suture ; elytra with distinct epipleura, convex ; coxae almost 

 contiguous ; tibiae without any transverse ciliate ridges, anterior 

 ones pluri-dentate outwardly, last tooth less developed than the 

 second, and set almost at the inner angle of the apex ; abdomen with 

 five fused segments. 



