A Monograph of the Formiciclae of South Africa. 365 



agree in size with Forel's description, being 2 - 5 mm. long instead of 

 P9. The two species, inermis and nanus with its varieties, are 

 evidently very closely allied,' and in the circumstances, it appears 

 safest to repeat here the authors' original descriptions. 



M. inekmis, Emery. 

 Ann. Soc. Ent. Trance, vol. 63, p. 41, £ , 1895. 



" ^ . 2-2 - 2 mm. Fuscous, with an abundant but not long pilosity, 

 scantier on the legs and thorax than elsewhere ; head and thorax 

 coarsely reticulate, less shining thau the abdomen, which with the 

 petiole is very shining and punctate; disc of pro-mesonotum trans- 

 verse, the anterior angles acute, obtusely 6-lobate posteriorly ; epi- 

 notum unarmed ; nodes of petiole cuneiform." 



"Very closely allied to M. nanus, Andre, from which it differs more 

 especially by the absence of the epinotal spines. The pro-mesonotum 

 is a little shorter, the festoons or lobes of the posterior margin less 

 prominent. The sculpture and pubescence are identical. The nodes 

 of the petiole are still more squamiform. Makapan (Simon)." 



M. nanus, Andre. 



Eev. d'Ent., 2, p. 55, $ , 1892. 



"£. 2 - 75-3'25 mm. The pro- and mesonotum together form a 

 transverse rectangle, much wider than long ; the anterior angles of the 

 pronotum acute, the sides straight, separated from the mesonotum by 

 narrow and deep lateral excisions, and by a suture which is superficial 

 but distinct. Mesonotum shorter than the pronotum and of the same 

 width ; its posterior angles are dentiform but blunted, and its pos- 

 terior margin bears 4 short, obtuse and triangular teeth, of which 

 the two exterior are a little larger than the internal pair. Epinotum 

 armed with 2 small, acute and spiniform teeth. Petiole short, its 

 two segments having the form of fairly high scales ; the scale of the 

 1st segment, seen from the side, cuneiform, the summit very thin ; the 

 2nd segment is hardly thicker at the base than at the summit, which 

 is less trenchant and rounder. More or less dark reddish-brown, the 

 legs and. antennae testaceous, the abdomen nearly black behind. 

 Head and thorax fairly shining, fairly strongly reticulate-rugose ; 

 clypeus, frontal area and the vertical face of the epinotum nearly 

 smooth; 1st abdominal segment I airly coarsely and shallowly retieu- 

 late- punctate, the other segments nearly smooth. Pilosity whitish, 

 lon<i' and abundant all over. Gaboon." 



