Coleoptera from South Africa. 151 



is broadly emarginate in the middle and reaches from eye to eye, 

 posterior part raised above the neck into a ridge higher than the 

 anterior one, and with a median and two lateral sinuations ; median 

 part of the head plane, and M'ith a broad depression above each 

 eye partly edged by a very narrow groove which extends also along 

 the posterior raised part ; club of the antenna long, broad, com- 

 pressed, as long as the base of the prothorax, slightly curving in the 

 inner edge, which is distinctly marginate and has besides a distinct 

 raised line running parallel to it, outer margin broadly grooved from 

 base to apex, and having seven round alveolse as well as six obtuse 

 serrations on the upper edge, the intervals of which bear each a very 

 short yellowish seta, outer basal angle of the club long and sharp ; 

 prothorax bi-partite, the anterior part much raised, short, abruptly 

 truncate, deeply incised in the centre and on each side, and with a 

 deep transverse impression ; the posterior part is narrower than the 

 anterior, and has the shape of a truncate cone, broadly scooped out, 

 in the anterior median part, with each side of the incision produced 

 in a sharp, short tubercle ; elytra closely set with very short 

 greyish hairs, but very indistinctly punctured ; femora not clavate, 

 tibiEe straight, not thickened. Length 6, width 2| mm. 



Hah. Zambezia (Salisbury). 



The shape of the antennal club is that of Pleuropterus 

 alternans in general outHne, the impressions on the upper 

 side imitating somewhat the articulations of the antennge ; 

 the scooped out space of the posterior margin is not 

 unlike that of P. hlngl, but the serration of the edges of 

 the margin, as well as the impressions on the upper part, 

 are very different. 



P. viator., n. sp. 



Piceous-black, with the antennae and legs very dark red ; head 

 rugulose and having on the middle of the vertex three short im- 

 pressions, the median one of which is the deepest and is bounded 

 by two short ridges ; penultimate joint of antennai thick, the club 

 short, massive, the inner margin sharp, a little sinuate at the tip, 

 the outer one very broadly and deeply scooped out, with the basal 

 angle moderately long and sharp, the cavity of the outer margin 

 containing six distinct alveolai and the two edges slightly serrulate ; 

 prothorax bi-partite, with the anterior part very narrow and in the 

 shape of a ridge with a median groove, the median excavation very 

 deep, and the lateral part not deeply excised, and with a short blunt 

 tubercle on each side and two tubercles in the middle ; elytra short, 



