344 Annals of the South African Museum. 



T. desertorum, Forel. 

 Schultze, Eeise Siid-Afrika, vol. 4, p. 20, 9 , <$ , 1910. 



" 9 • 3 - 3 mm. Mandibles fairly shining, densely punctured. Cly- 

 peus carinate, moderately emarginate. Head quadrangular, as wide as 

 long, feebly concave behind, distinctly narrowed in front. There is a 

 scrobe for the whole of the scape, with a feebly rugose floor ; pos- 

 teriorly the scrobe curves round and forms the beginning of a flat 

 depression, behind the eye, for the base of the flagellum. The large 

 eyes, placed a little behind the middle of the head, occupy one-third of 

 the sides. The scape, like its scrobe, extends back to the posterior 

 fourth of the head; 2nd-7th joints of the flagellum much wider than 

 long. Thorax nearly as wide as the head. Mesonotum flat above. 

 Epinotum with two strong, triangular and almost spinose teeth 

 (slightly longer than their basal width), the dorsum a little longer 

 than the declivity. First node with a fairly short peduncle ; both 

 nodes rounded above and at the sides, about one and three-quarter 

 times wider than long, the 2nd node one-third to one-half wider than 

 the 1st. No episternal teeth, only a curved ridge. Coarsely and 

 longitudinally rugose (including the epinotum above), coarsely reticu- 

 late between the rugae ; the petiole and some places in part only 

 coarsely reticulate or reticulate-punctate, barely shining. Abdomen 

 and legs smooth, but with fairly abundant piligerous punctures. The 

 whole body, including the femora, abundantly clothed with a short, 

 woolly pilosity of 3-5 branched hairs. On the tibiae and scapes the 

 hairs are oblique, almost decumbent, and mostly simple. Red-brown 

 to brownish-red ; abdomen bi'own. Tarsi, tibiae, flagellum and man- 

 dibles brownish-yellow-red. Wings not long, faintly tinged with 

 yellow, almost hyaline, with pale nervures and costa. 



"(J. 3 - 2-3 - 4mm. Mandibles 6-dentate, shining. Clypeus arched, 

 feebly emarginate. Head quadrangular but rounded, as wide as long. 

 Eyes not large. The scape does not reach the occipital margin. 

 Second joint of the flagellum two and a half times longer than the 1st, 

 and not quite as long as the scape. Epinotum with two tubercles ; 

 nodes more angular than in the 9 > otherwise similar. Head coarsely, 

 petiole more finely reticulate ; epinotum and sides of thorax coarsely 

 and longitudinally rugose, the rest smooth, sparsely punctured. Hairs 

 on the body mostly bifid or trifid, or simple. Legs and antennae only 

 with an almost decumbent pilosity. Fairly dark brown ; antennae, 

 mandibles and legs yellowish, femora brownish. Wings as in the 9 . 



"Between Kgokong and Kang, Kalahari (Schultze)." 



