212 Annals of the South African Museum. 



joint is one-third wider than long, narrowed behind, convex in front, 

 and a little wider in front than the 1st. The abdomen is truncate at 

 the base, and more globose than in the majority of the species of this 

 genus. 



Willowmore, Cape Prov. This species forins very populous colonies 

 in rocky ground, and is also a bold insect which uses its sting very 

 readily. 



(S.A.M., E.M., G.A. colls.) 



M. Emeryi, Mayr. (Plate V, fig. 62.) 

 Ann. K.K.KH. Mus. Wien, vol. 10, p. 132, £ , 1895. 



£ . 26-3 mm. Yellowish brown, the antennae, mandibles and legs 

 brownish yellow. The pubescence is composed of long, pale and 

 oblique hairs, rather abundant on the head, scantier on the thorax and 

 abdomen. Legs and antennae with a close and short pubescence. 

 The pilosity on the abdomen, petiole and thorax long, and more 

 abundant on the abdomen than elsewhere. Head and thorax dull, 

 nodes and abdomen shining. Head finely and longitudinally striate, 

 obliquely striate between the frontal carinae and the anterior lateral 

 angles, fairly closely punctured between the striae, the punctures 

 piligerous. Thorax longitudinally striate ; the pronotum in front, and 

 the epinotum transversely striate, the sides of the meso- and epithorax 

 reticulate-punctate. Abdomen polished; nodes of petiole shallow ly 

 punctured. 



Head as wide as long, or nearly so, the sides convex, the posterior 

 margin feebly concave, a little wider in front than behind. The eyes 

 are rather small and situated at the middle of the sides. The scape of 

 the antenna barely reaches the posterior margin. The head is 

 noticeably wide, quite two-thirds wider than the thorax. The clypeal 

 carinae are fairly distinct. The mandibles coarsely striate and 

 obtusely quadridentate. The pro-mesonotum is very convex trans- 

 versely in front, its dorsal profile is also very convex ; it is quite twice 

 as Avide across the rounded shoulders as it is at the meso-epinotal 

 sutm-e. The dorsum of the epinotum is almost horizontal in profile, 

 half as long, and not more than half as wide as the pro-thorax ; the 

 declivity is rather oblique, but forms a very distinct angle at its junc- 

 tion with the dorsum, on each side of which lies a blunt and elongate 

 tubercle, the space between the tubercles feebly concave transversely. 

 The 1st node of the petiole, seen from above, is elongate, almost one 

 and a half times as long as wide, the anterior face vertical and only 

 half as long as the posterior face ; the node is rounded above, obtusely 



