A Monograph of the Formicidae of South Africa. 427 



impression on the vertex. The sculpture is like that of punctidata, 

 but the head is more shining, mostly more sparsely and more finely 

 punctured, but occasionally more coarsely and more closely, in which 

 case the occipitofrontal sulcus is finely and longitudinally striate. 



" ^ , like that of punctidata, somewhat larger, 2 - 5 mm. 



" $ , like that of punctulata, somewhat larger, 6'5 mm. 



" The colour of the 1/ 1/ varies from reddish-yellow to brown. The 

 darkest 1/ % are from Port Elizabeth (host of Paussus Elizabethae, 

 Per.), leg. Dr. Brauns ; these also have the coarser puncturation of 

 the head. The remaining examples come from Natal (4000 ft., leg. 

 Gr. D. Haviland), and Port Elizabeth (leg. Dr. Brauns), and are of a 

 brighter yellowish-brown or reddish-yellow, and the puncturation of 

 the head is finer." 



Dr. Forel places this race with rotundata. In the paper cited 

 specimens of P. Foreli taken at Knysna have been erroneously referred 

 by him to impressifrons. 



impressifrons, var. Ilgii, Eorel. 



Voeltzkow's Eeise, vol. 2, p. 82, £, %, 1907. 



Rev. d'Ent., p. 138, $, $, 1908. 

 Deutsch. Ent. Zeitschr. Beiheft., p. 213, 1913. 



1/. 5 mm. Head 1*9 mm. wide x 2 mm. long. This variety differs 

 from the type of the species in the following characters : 



The head is not so much wider behind than in front, being widest 

 at about the middle (at the posterior fourth in the type of rotundata), 

 the posterior angles more prominent, less rounded, the occipital 

 emargination wider and shallower. The sides of the head above the 

 eyes flatter, or slightly convex. The striae between the frontal 

 carinae less close and finer, the sides of the head in front less strongly 

 sculptured. The anterior margin of the clypeus is more deeply 

 emarginate, the median area not carinate. The base of the abdomen 

 is more sharply truncate. Smaller than the type-species. 



$ . 3-32 mm. Paler than the type, head reddish-brown, thorax 

 brownish-yellow, petiole and abdomen fuscous brown, the abdomen 

 somewhat yellowish at the base. Articulations of the legs, the 

 antennae and mandibles brownish-yellow, the tarsi entirely yellow, 

 femora and tibiae fuscous yellow. Meso-epinotal suture shallower 

 than in the type-species, epinotal spines shorter and a little closer 

 together. Second node less conical, more barrel-shaped, widest a 

 little behind the middle (widest at its posterior third in the type- 

 species). Otherwise like rotundata. 



