A Monograph of the Formicidae of South Africa. 139 



The ventral lamella of the 1st joint is produced anteriorly into an 

 angular projection pointing downwards, the 2nd joint is produced 

 below and anteriorly into a blunt projection directed forwards. The 

 1st abdominal segment as long as, or a little longer than wide, and 

 as long as the remaining segments taken together. Legs long, the 

 1st joint of the hind tarsi as long as the tibia. 



Bulawayo. Port Elizabeth. (Brauns.) 



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



A. steindachneei, Mayr. 

 Ann. K.K.N.H. Mus. Wien, vol. 16, p. 2, $, 1901. 



"This species differs from rotundatus in the following particulars. 



£ . The sides of the epinotum and also of the metasternum plenti- 

 fully clothed with a baekwardly directed pubescence, whereas in 

 rotundatus the epinotum has no pubescence and the sides of the 

 metasternum only a scattered pubescence.* The 3rd-7th joints of 

 the flagellum not longer than wide. The mesonotum, the dorsum of 

 the epinotum and the 2nd joint of the petiole, smooth and shining, 

 with a few piligerous punctures. The epinotum like that of rotun- 

 datus, but the boundary between the dorsum and the declivity is 

 placed rather higher up, and the declivity is bounded by a raised 

 margin only at the sides (in a larger £ before me, a curved raised 

 margin above is distinctly present). 



Eeddersburg, Orange Free State. (Brauns.)" 



A. eugeniae, Emery. (Plate IV., fig. 38.) 



Ann. Soc. Ent. France, vol. 63, p. 48, g , 1895. 



$ . 3 "7-4 mm. Larger and much darker than rotundatus, and 

 varying less in size than that species. The colour is a bright 

 castaneous red, lighter on the abdomen. The legs are yellowish red, 

 the sides of the thorax below, and the mandibles, brownish red. 

 This species closely resembles rotundatus, differing from it only in 

 the following characters. The pilosity is less abundant, but more 

 regularly distributed and longer. The head is distinctly wider in 

 front than behind. The masticatory margin of the mandible is 

 smooth and edentate, or, in some specimens with traces of three 

 minute teeth behind the apical tooth, which is blunter than in 

 rotundatus. The antennae are rather longer, the scape almost 

 reaching back to the occipital margin, and all the joints of the 

 flagellum are distinctly longer than wide. The thorax is rather 



* The specimens of rotundatus in my collection, determined for me by Dr. 

 Forel, have no pubescence on the metasternum, only a few long hairs. — G. A. 



