A Monograph of the Formicidae of South Africa. 495 



$ . 3 - 8 mm. Thorax narrower than in mediorufa, the median 

 shining area on the mesonotum narrower and more sharply defined. 

 Second segment of the petiole wider and shorter, twice as wide behind 

 as long (one and a-third times wider than long in mediorufa) . Other- 

 wise like that variety. 



Willowmore, C.P. (Arnold). The nest is a small and irregularly- 

 shaped carton nest attached to the branches of median-sized shrubs or 

 small trees. 



Var. quisquilia, Santschi. 

 Ann. Soc. Ent, France, vol. 84, p. 502, $ , 1916. 



£ . 5 mm. Of a brighter red than in the type, the base of the 

 abdomen diffusely reddish-brown in some specimens. The fundamental 

 sculpture is stronger than in the race, and the thorax has also some 

 longitudinal rugae which are strongest on the base of the epinotum. 

 The epinotal spines are a little longer than in the type of the race, and 

 are also slightly sinuate in their apical half. The anterior angles of 

 the 1st node are more pronounced, and the upper face of the node is 

 distinctly margined at the sides. Otherwise like the race. 



Victoria Falls, S.R. (G.A. coll.) 



Var. brtxta, Santschi. 

 (As race of ferruginea, Forel.) Bull. Soc. Ent. France, p. 412, ^ ,1913. 



^ • 4 - 3-4 - 5 mm. Head and thorax reddish-brown or sordid yellowish- 

 brown ; 1st, 2nd and 3rd segments of abdomen more or less dark, 

 brownish-yellow in the middle, shading off to dark brown at the sides 

 and at the extreme apical margins, the paler areas most distinct on 

 the 1st segment, the apical segments dark brown. The median tubercle 

 of the mesonotum is stronger than in quisquilia. The petiole is 

 narrower than in that variety, and the 1st joint less distinctly marginate 

 at the sides. The 2nd joint is longer than it is wide across the middle. 

 Apart from these slight differences this form hardly differs from var. 

 quisquilia, and I think it should therefore be placed with rufonigra 

 rather than with ferruginea. 



Springvale, S. Rhodesia. (Gr.A. coll.) 



Eace feekuginea, Forel. 



(As species) Mitth. Schweiz. Ent. Ges., vol. 8, p. 353, $ , 1892. 



" £ . 4'8-6 mm. Mandibles longitudinally striate, with 4 or 5 

 teeth. Head, excluding the mandibles, rectangular and rounded at 



