A Monograph of the Formiciclae of South Africa. 337 



The colour is reddish-brown, that of the head lighter, especially on 

 the anterior third. The base of the 1st abdominal segment is evenly 

 and shallowly punctured. 



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



T. trimeni, Emery. 

 Ann. Soc. Ent. France, vol. 63, p. 40, $ , 1895. 



" $ . 1*7 mm. Allied to T. Walshi and lanuginosa (Indian species), 

 but differing in having the 2nd node of the petiole transverse, dis- 

 tinctly wider than the 1st ; the 1st abdominal segment has foveiform 

 punctures, and the epinotal spines are shorter. 



" ? . 3 - 2 mm. Very like the £ ; abdomen similarly sculptured, 

 2nd node of the petiole less transverse. Kimberley, 1^,2$ 

 (Simon)." 



Also a variety of the ^ ; " less strongly sculptured, 1st abdominal 

 segment without foveiform punctures. Hammans Kraal, 1 specimen." 



In addition to the above, the author remarks that in Trimeni the 

 2nd node is distinctly wider than the 1st and strongly transverse, the 

 1st appears hardly wider than long. 



T. microps, Mayr. 

 Ann. K.K.N.H. Mus. Wien, vol. 16, p. 25, £, $, 1901. 



" £' . 23-2 - 5 mm. Yellow, fairly dull, abdomen shining. The 

 whitish erect hairs on the upper sm-face of the body are not long, but 

 are fairly abundant. Mandibles longitudinally striate. The head is 

 coarsely reticulate-punctate, the frons and vertex chiefly coarsely 

 and longitudinally rugose, the clypeus with longitudinal striae and 

 a little median carina, somewhat impressed in the middle in front, 

 the anterior margin emargiuate ; the scrobe is shining and fairly 

 finely and irregularly rugose, with a few strong transverse striae 

 near the antennal socket. The eyes are very small, composed of from 

 6-9 facets. Seen in profile, the closely reticulate thorax has the 

 pronotum strongly curved backwards from below and in front ; the 

 mesonotum is only slightly convex, the epinotum moderately so. 

 The latter bears two large, triangular, and equilateral teeth. The 

 dorsum of the epinotum merges gradually into the declivity. 

 The 1st node of the reticulate petiole is twice as wide as long, the 

 2nd node somewhat wider than the 1st, and fully twice as wide as long. 

 The abdomen is smooth, with scanty piligerous punctures. 



" $ . 3"4-3 - 5 mm. More or less reddish-yellow, or also partly 



