396 Annals of the South African Museum. 



somewhat transversely rugose and reticulate The spaces between 

 the rugae on the mesonotum, epinoturn, and nodes slightly shining. 

 The fundamental sculpture all over consists as usual of a very fine 

 and close reticulation. Abdomen moderately shining, feebly longi- 

 tudinally striate near the base. 



Head, including the closed mandibles, subtriangular, a little longer 

 than wide behind. The posterior margin slightly concave, the pos- 

 terior angles dentate, the lateral margins behind the eyes distinctly 

 denticulate, narrowed in front of the eyes. The latter, placed for the 

 greater part behind the middle of the sides, are very convex and 

 occupy about one third of the sides. The ocelli are fairly apparent 

 and not flattened, as in the $ . The lower anterior angles of the 

 pronotum dentate, rectangular. Mayrian furrows on the mesonotum 

 deep and wide. The paraptera of the mesothorax are produced pos- 

 teriorly into flattened and horizontal lobes, rounded at their apices 

 (this character is absent from the only other J of the genus which 

 I have seen, brevisetosus-lujae). The profile of the dorsum of the 

 thorax forms a low convexity, the pro- and epinoturn not much lower 

 than the mesonotum. The dorsum of the epinoturn is about as long 

 as the scutellum, widest at its base. Epinotal teeth triangular, wider 

 than long, moderately divergent, the margin between them, i. e., the 

 brow of the declivity, arcuate. On each side of the base of the 

 dorsum of the epinoturn there is a small dentiform angle. First node 

 of the petiole less convex transversely above than in the $ ; the 

 anterior lateral angles rounded, not rectangular as in the $ . The 

 2nd node more or less trapezoidal, the anterior margin convex, wider in 

 front than behind, wider than the 1st node, one and a half times 

 wider than long, the anterior lateral angles subacute and prominent. 

 Abdomen oval, narrowed towards the apex, the sides fairly convex, 

 one and a half times longer than wide The 1st node has a veutral 

 projection as in the $ , but it is not so long from back to front, and 

 less sharply dentate at its free angles. 



Durban. (S. A.M., E.M., Gr.A. colls.) ; types of $ and £ in my 

 collection. 



In the opinion of Dr. Santschi (see Ann. Soc. Ent. France, vol. 84, 

 p. 508, 1916), brevisetosus and lujae are but races of pygmaeus, Andre ; 

 the form described above, and so determined by Forel himself, differs 

 from lujae in some minor features according to Dr. Santschi, who has, 

 therefore, named it var. plebeja of race lujae. These slight differences 

 come within the limits of variation which, as I have remarked before, 

 may be found in a single nest, and for that reason I have not considered 

 it advisable to adopt Dr. Santschi's revision. 



