268 Annals of the South African Museum. 



Yery similar to eumenoides, and differing from it in the following 

 characters. The pilosity is shorter and more oblique, somewhat 

 scanty. More shining, especially the head, pro-mesonotum, 2nd node 

 of the petiole, and the legs; the tibiae are shining (dull in eumenoides). 

 The sculpture is feebler and less close. The head has only longi- 

 tudinal striae, without any transverse anastomoses or reticulations. 

 The pro-mesonotum has fewer and more continuous longitudinal 

 striae, and is less strongly marginate at the sides and in front. There 

 is no trace of the pro-mesonotal suture on the dorsum (faintly in- 

 dicated by a depression in eumenoides). The pronotum below has far 

 larger lateral teeth, these being plainly visible, and projecting well 

 beyond the lateral outline, when viewed from above. The posterior 

 lateral lobes or carinae of the mesonotum are lower and less divergent 

 outwardly ; the lateral margins of the dorsum of epinotum are straighter 

 and less raised. The meso-epinotal suture is not so deep, and the base 

 of the epinotum is narrower. The spines are thinner and relatively 

 longer. The 1st node of the petiole is higher, higher than the 2nd (as 

 high as the 2nd in eumenoides), and is somewhat truncate behind (in 

 eumenoides the dorsal and posterior outlines form a continuous curve) . 

 The peduncle of the 1st joint is also a little shorter, being only as long 

 as the node. The tibiae and scapes are less strongly striated. 



5 . 15 mm. Entirely dark brown, almost piceous, except the 

 anterior half of the head, which is reddish brown. It differs from 

 eumenoides, to which it bears a close resemblance, in the following- 

 characters. The head is less narrowed in front, being almost as wide 

 in front as behind ; the posterior angles are less rounded, and the 

 posterior margin is straight, not convex, as in eumenoides. The 

 sculpture of the head is not quite so strong, and the space between 

 the reticulations is shining. The sculpture of the mesonotum stronger, 

 and composed of fewer striae. The dorsum of the epinotum, although 

 short, is distinctly delimited from the declivity, and the space between 

 the spines is widely arcuate, not acutely angular, as in eumenoides 

 (see PL VII, figs. 89a, o; 90a, o). The lobe-like expansions covering 

 the stigmata are also more angular and dilated than in eumenoides. 

 The spines are shorter, and hardly divergent. The peduncle of the 

 1st joint of the petiole is wider posteriorly and shorter. The wings 

 are much paler coloured, being ochreous, not brown as in the other 

 species. The anterior face of the 1st node has a dense yellowish 

 pubescence, fairly long, entirely absent in the § of eumenoides. 



$ . 13 - 5 mm. Black. This differs from the $ of eumenoides in 

 having a much finer sculpture and finer, less dense, but longer pilosity. 

 The pubescence of the thorax is also less noticeable. The dorsum of 



