370 Annals of the South African Museum. 



they are wide at the base. Between them, the posterior margin is 

 deeply and arcuately emarginate, with a little and deeper excision in 

 the middle. The anterior angles of the pronotuni are acute and 

 produced forwards ; the lateral margins of the pronotum converge 

 gradually and almost in a straight line, from the anterior angles 

 backwards to the position of the suture, where they are abruptly 

 constricted. The sides of the mesonotum converge in the same way as 

 far as the apex of the spines. The head and thorax are very sharply 

 reticulate-rugose ; on the head the sculpture tends to form longi- 

 tudinal ridges, especially in front, but this arrangement is less 

 noticeable than in Magrettii. The surface of the head is, moreover, 

 also finely punctulate. The abdomen is very densely punctulate and 

 dull, and sprinkled with small piligerous punctures. The hairs are 

 long, and all of about the same length." 



Race stjturalis, Forel. 

 Ann. Soc. Ent. Belg., vol. 54, p. 424, £ , 1910. 



" ^ . 3-33 mm. Head and abdomen brown ; thorax, petiole and 

 limbs reddish. Clypeus without the 2 very small teeth in front 

 which are to be seen in the race nitidiventris, Mayr. The sides of the 

 thorax are emarginate between the pro- and mesonotum, and the pro- 

 mesonotal suture is visible as a transverse line. Mesonotal spines 

 much wider, longer and more robust than in the race nitidiventris, 

 longer than the thin spines of the epinotum. Otherwise identical 5 

 abdomen shining as in nitidiventris. Natal (Haviland)." 



(S.A.M. coll.) The reticulations on the pro-mesonotum are much 

 smaller than in nitidiventris. 



Race nitidiventris, Mayr. 



Ann. K.K.KH. Mus. Wieu, vol. 16, p. 26, £, 1901. 



$ . 3T-3*6 mm. Brownish-black, thorax and nodes dark reddish- 

 brown, legs dark brown, bases and apices of the femora and tibiae, the 

 tarsi, mandibles and the first five joints of the flagellum paler, more or 

 less ferruginous. The anterior three-fourths of the head longitudinally 

 rugose, becoming more reticulate posteriorly, the posterior fourth 

 reticulate. Epinotum irregularly rugose and partly reticulate between 

 the spines and the posterior margin of the mesonotum. Abdomen 

 moderately shining, very shallowly, closely and finely reticulate, more 

 strougly reticulate over the basal third. The thorax is duller than in 



