A Monograph of the Formicidae of South Africa. 491 



long, the median groove almost obsolete. Abdomen one and a-half 

 times longer than wide. Deiilated. 



" $ . 3*7 mm. Head and abdomen brown, the rest of a very pale 

 brown. Wings hyaline. A moderate and oblique pilosity present on 

 the body. First joint of petiole wider in front than behind. 7 ' 



Durban, Grahamstown and Port Alfred. Common in Natal. 

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



Tar. simia, Forel. 

 Schultze, Reise Siid-Afrika, vol. 4, p. 6, $ , $ , <$ , 1910. 



" $ . 4-6 mm. Larger than the type-species, from which it differs 

 by the coarsely and longitudinally rugose dorsum of the thorax, the 

 declivity of the epinotum excluded. The mesonotum is also less 

 sharply marginate. Otherwise like the type in all particulars, 

 including colour and the dull reticulate-punctate sculpture of the 

 thorax. 



"$. 9" 5 mm. Head large, much wider than the thorax. Mesonotum 

 smooth. Sides and dorsum of epinotum longitudinally rugose. Other- 

 wise like the type of the species. 



"($. 4*3 mm. Mesonotum partly longrhidinally rugose (rugulose?) 

 and shining. Otherwise like the type-species. 



" Chakamakue, between Lehututu and Letlake, Kalahari. In acacia 

 wood." 



Var. durbanensis, Forel. 



(As var. of ferruginea) Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 234, £ , 



1916. 



£> . 4-5 mm. Head, thorax and petiole brownish-red (burnt 

 umber), the thorax sometimes paler than the head. Abdomen dirty 

 ochreous-yellow, the apical fourth of all the segments brownish. The 

 meso-epinotal suture is deeper than in tricolor or rvfonigra, and the 

 base of the epinotum a trifle more convex lengthwise than in tricolor. 

 The dorsum of the epinotum widens rapidly backwards (i. e. the sides 

 are strongly divergent posteriorly) and the spines are about twice as 

 long as their basal width. The 2nd node of the petiole has a deeper 

 and narrower median groove than tricolor. Otherwise like that race. 



9 . 9 mm. Abdomen dark reddish-ochreous, the apical margins 

 brownish, the apical segment yellowish-brown except at the base. The 

 upper face of the 1st node is more concave, and the excavation extends 

 further back than in tricolor. Otherwise like that race. 



