1898.] of the Coleoptera of South Africa. 363 



narrow groove on each side of the median one, reaching to 

 more than one-third of the length ; elytra oblong, a little broader 

 than the prothorax at its widest, slightly depressed in the anterior 

 part and convex behind, striate with the striae smooth and the 

 intervals moderately convex ; under side piceous-red. Length 

 8|- mm. ; width 3 mm. 



Hab. Cape Colony. Captured by Mr. A. Baffray on the slopes 

 of Table Mountain. 



Gen. DRIMOSTOMA, 



Catal., p. 556. 



Drimostoma longicornis. 



Piceous-black", shining ; antennae and legs rufescent ; head smooth ; 

 prothorax as broad at base as at apex, slightly ampliate laterally in 

 the middle, smooth, the supra-lateral basal impressions not very 

 deep ; elytra very slightly broader than the base of the prothorax ; 

 but a little ampliate from below the humeral angle, oblong, 

 moderately convex, finely striate, the striae smooth and the 

 intervals somewhat convex, deeper black than the head and pro- 

 thorax and with an apical, triangular navescent patch extending on 

 each side from the first to the fourth stria ; the outer margin is 

 slightly rufescent. Length 6 mm. ; width 3 mm. 



Allied to D. amaroide, Catal., p. 557, from which it is distinguished 

 by the antennae, which are longer and have less moniliform joints, 

 and by the shape of the prothorax which is not at all attenuated 

 laterally towards the base. In mature examples of D. amaroide the 

 posterior part of the elytra is sometimes navescent, but there is no 

 distinct patch on each side of the suture, as in D. longicornis. 



Gen. PTEROSTICHUS, 



Catal., p. 559. 



Pterostichus macropterus. 



Black, glabrous, shining; legs, tarsi, and antennae piceous-red; 

 head smooth, frontal impressions long and deep ; prothorax sub- 

 parallel laterally, but a little attenuate from past the median part 

 to the base, lateral margin thick and a little recurved behind, basal 

 lateral depression hardly defined, the supra-lateral one narrow and 

 deep, median longitudinal groove reaching from the base to nearly 



