A Monograph of the Formicidae of South Africa. 279 



longitudinally striate and partly rugose. The head is longitudinally 

 striate all over, not merely on the frons, cheeks, and vertex, as in the 

 preceding species. Prothorax fairly strongly and longitudinally 

 rugose. Epinotal spines longer than in quadrispinosum, almost as 

 long as the interval between their bases ; the episternal teeth not much 

 shorter than the epinotal. The 1st node of the petiole is not so narrow 

 as in the quadrispinosum. Abdomen microscopically rugulose near 

 the base, the remaining portion smooth and shining. The sculpture 

 of the head, thorax, and nodes is decidedly coarser than in qtcadris- 

 pinosum, but otherwise the two species are very similar and closely 

 allied. In some specimens- the puncturation and rugae are stronger 

 than in others, and the meso-epinotal suture is also sometimes fairly 

 clearly defined. 



? . 4"2 mm. Head, thorax, nodes, legs, and antennae dark red 

 (burnt sienna), abdomen reddish-brown, the apical margins of the 

 segments paler. The sculpture of the head is like that of the ^ . 

 Pronotum coarsely reticulate-rugose, mesonoturn strongly and evenly 

 longitudinally striate (more finely so on the anterior half of the 

 scutellum), dorsum of epinotum with 4 or 5 strong and transverse 

 rugae, the declivity finely l'eticulate, the sides of the thorax finely and. 

 longitudinally striate, the nodes of the petiole dull, granulate, and] 

 very sparsely and shallowly punctured. Abdomen dull, very finely 

 rugulose. Head and thorax feebly shining between the striae. Pro- 

 notum exposed above only at the shoulders. Mesonoturn feebly 

 convex in front transversely, fairly flat behind. Dorsum of epinotum 

 as long as the scutellum. Epinotal spines stouter than in the ^ • 

 First node of petiole wider than in the ^ , as wide as long. Second 

 node more or less spherical, moderately convex above from side to side. 

 Wings tinged with yellow, nervures and stigma brownish-yellow. 

 Otherwise like the £ . 



$ . 4 - 5 mm. Head brownish yellow, the vertex, in front of and 

 between the ocelli, brown. Thorax brownish-yellow or reddish- 

 yellow, the pronotum paler, the base of the scutellum, the apical half 

 of the epinotum, and the nodes pale brown ; abdomen brownish-black. 

 Legs, antennae, and mandibles dirty yellow. Head dull, very finely 

 reticulate and striate. The striation is longitudinal in front, trans- 

 verse between the ocelli and at the posterior corners. Pronotum 

 exceedingly finely reticulate ; mesonoturn posteriorly and the scutellum 

 very finely, regularly, and longitudinally striate. The scutellum is 

 also somewhat reticulate-punctate. Epinotum and nodes reticulate- 

 punctate and dull. Mesonoturn smooth and shining in front. 

 Abdomen microscopically reticulate and shining. Head as long as 



