18 Annals of the South African Museum. 



posterior margin deeply excavated below the lateral angles, which 

 project backwards and are rounded. 



The 1st abdominal segment is wider and longer than the petiole, 

 but less than the following segment, and is rounded at the 

 sides. 



Hab. Willowmore, Cape Prov. (Brauns.) " 



P. Cooperi, n. sp. 



$ . 4-2-4'5 mm. Black, femora and mandibles piceous, tibiae, 

 tarsi, and antennae dark ferruginous. Petiole, abdomen, and legs 

 with a very sparse pale pubescence. Whole body with a scanty 

 pilosity of long, whitish yellow oblique hairs, more abundant on the 

 abdomen, shorter and denser on the legs. Whole body shining, 

 head and thorax particularly so. The head is smooth and impunc- 

 tate between the eyes and below them, rugoso-punctate between the 

 frontal and genal cariuae, and above, from the posterior margin of 

 the eyes to the occipital margin, coarsely and irregularly punctate. 

 The thorax is punctate-striate anteriorly and posteriorly, almost 

 impunctate in the middle except at the lateral margins where there 

 are a few large punctures. The petiole and 1st abdominal segment 

 are closely and strongly punctured, the punctures are large, and on 

 the petiole somewhat elongated. The 2nd abdominal segment is 

 closely and rather finely punctured, the punctures being much 

 smaller and more even than those of the 1st segment ; 3rd-5th 

 segments finely punctured but less densely than the 2nd 

 segment. 



Head a little longer than wide, narrower in front of the eyes than 

 behind them, sides moderately convex, occipital margin concave, 

 posterior angles sub-acute. Eyes convex, occupying a little more 

 than one-quarter of the sides of the head, and situated somewhat 

 dorsally just within the anterior half of the head. Frontal carinae 

 considerably raised and parallel, convergent posteriorly and meeting 

 at a point at a level with the anterior margin of the eyes. Seen 

 from the side, the profile of the carinae is strongly convex in its 

 anterior half, then shallowly concave for a quarter of its length and 

 straight along its posterior quarter. The posterior margin of the 

 clypeus is raised, and meets on each side a low genal carina which 

 runs forward from the inner margin of each eye, and forms with 

 it a distinct angle or tooth, just above the base of the mandibles. 

 A shallow crenate groove surrounds the posterior two-thirds of the 

 eye, and is continued below it to the base of the mandible. Antennae 



