1896.] of the Coleoi)tcra of SoutJi Africa. 431 



Omostropus vicarius. 



Smaller than the preceding species, and. with the same colouring on 

 the upper part, but the prothorax has a very narrow rufescent margin 

 and the legs are brick-red ; the shape of the head is similar, but the 

 prothorax is much less sinuated laterally behind, the posterior angle, 

 although sharp, does not project, and the basal lateral impressions 

 are broader, shallower, and not punctured ; the elytra are also sub- 

 parallel, but the intervals, although very convex, are not so much 

 raised; under side piceous. Length 9 mm. ; width 3-3J mm. 



Hah. Cape Colony (Seymour), Natal (Escourt), Transvaal 

 (Pretoria). 



Omostropus consanguineus. 



Piceous; elytra fuscous brown; antennae, palpi, and legs rufescent; 

 head smooth ; prothorax ampliated in the anterior part, deeply 

 sinuate behind, with the posterior angles sharp and projecting, 

 lateral depressions broad, deep, the whole of the base with a broad 

 series of closely-set punctures extending from one depression to the 

 other ; elytra parallel, narrowly striate, with the intervals convex, 

 but not so much raised as in the two preceding species, the puncture 

 on the third interval very distinct ; under side piceous red. Length 

 8 mm. ; width 2f-3 mm. 



Hah. Cape Colony (Griqualand West), Ovampoland. 



Omostropus similis. 



Piceous black, with the palpi, antennae, a narrow marginal band 

 on the prothorax, the legs, and also the labrum brick-red ; head 

 smooth ; prothorax ampliate in the anterior part, narrowed behind 

 but not sinuate, posterior angle sharp but not projecting, basal lateral 

 depression narrow, shallow, and punctured ; elytra not broader than 

 the base of the prothorax, very parallel, narrowly striate, the striae 

 faintly punctulate, intervals slightly convex. Length 11 mm. ; width 

 4 mm. 



As long as 0. tersulus, but narrower, and with the elytra more 

 parallel and the intervals almost plane in comparison ; the prothorax 

 is not so sinuate behind and the angles are not projecting. 



I have only seen the female of this species, but I have no doubt 

 that the species belongs to the present genus. 



Hah. Ovampoland (Lake N'Gami). 



Gen. HYPOLITHUS, Dej., 

 Spec. Col., iv., 1829, p. 166. 



Mentum transverse, deeply emarginate, median part straight, 

 inner side of the lobes subperpendicular, apex sharp ; ligula 



