154 Annals of the Sotith African Museum. 



is one-quarter longer than wide, all the other joints at least twice as 

 long as wide. The mesonotum is much more convex and the 

 scutellum posteriorly is also more convex and higher. The epinotum 

 resembles that of the ? . The legs are long and slender. 



The $ of the race differs from the type species in its larger size, 

 stronger and denser puncturation, slightly shorter scape and duller 

 surface. 



Bulawayo ; common. (S.A.M., E.M., G.A. colls.) 



T. Arnoldi, Forel. (Plate IV., fig. 44.) 

 Ann. Soc. Ent. Belg., vol. 57, p. 139, $ , 1913. 



£ . 1*6-1 '7 mm. Light brown, anterior portion of the head, 

 scape, 1st joint of the flagellum, mandibles, tarsi, articulations of the 

 legs and the petiole, yellowish. Moderately shining and almost 

 impunctate. A very fine pubescence on the whole body and legs. 

 Pilose hairs absent except on the clypeus. Head very little longer 

 than wide, rectangular, sides feebly convex, angles rounded, posterior 

 margin almost straight. Eyes situated within the anterior third of 

 the sides of the head. Clypeus wider than long, shallowly but 

 widely emarginate on the anterior border. Mandibles shining and 

 feebly punctured, masticatory margin with a few small teeth, the 

 apical tooth larger and more acute. The scape does not reach back 

 as far as the occipital margin ; the flagellum is thickened towards 

 the apex, the 1st joint as long as the 2nd, 3rd and 4th taken 

 together, apical joint as long as the 3 preceding joints together, 

 2nd-9th joints wider than long. Pro-meso, and meso-epinotal 

 sutures moderately distinct. Pronotum wider than the rest of the 

 thorax, and a little wider than long ; mesonotum almost as long as 

 the pronotum ; dorsum of epinotum wider than long, only half as 

 long as the mesonotum, the declivity oblique, longer than the 

 dorsum, widest below, its brow rounded. Petiole longer than wide, 

 flattened dorso-ventrally. Abdomen oval, all the segments much 

 wider than long. 



$ . 2*7 mm. (Hitherto undescribed.) Dark brown, tarsi pale 

 yellow, articulations of the legs, base of the scape, mandibles and 

 anterior angles of the head brownish yellow. The sides and the 

 posterior margin of the head are straight, the posterior angles 

 rounded. Eyes large, ocelli small and set close to the posterior 

 margin. Pronotum very short, mesonotum large and moderately 

 convex, as wide as long and as long as the distance from the 

 antennal sockets to the posterior margin of the head ; scutellum 

 wider than long, two-fifths as long as the mesonotum ; epinotum 



