A Monograph of the Formicidae of South Africa. 581 



(30) 33. The scape just reaches the hind margin of the head pygmaea, Latr. 



(29) 34. Meta-epinotal suture very shallow ; the scape barely extends beyond the 

 hind margin of the head. 



(38) 35. Colour chiefly brown or brownish red, at least the abdomen brown. 

 (37) 36. Thorax dark ochreous . . pygmaea, var. mima, Arnold. 

 (36) 37. Thorax brown or reddish brown . pygmaea, var. punctum, Forel. 

 (35) 38. Colour mainly dark orange-ochreous, only with blackish patches here 



and there, chiefly on the abdomen. 



(40) 39. Pubescence fairly abundant, especially on the abdomen and the sides of 



the head .... Brunni, var. pubescens, Forel. 



(39) 40. Pubescence scanty, almost wanting on the abdomen Brunni, Mayr. 



P. rufescens Santschi, P. fuscula Emery and P. decolor Emery 

 being unknown to me in nature, are not included in the above 

 key ; P. capensis Mayr is a synonym of Acantholepis capensis. Mayr. 

 P. nuptialis Santschi is known only in the £ sea, and cannot 

 therefore be included in the key. 



Sub-genus ANACANTHOLEPIS, Santschi. 



Gdteborgs Kungl. Vetens. och Vitterh. Handl. XV, 2. p. 36, 1914. 



For characters see table of sub-genera. 



P. (sub-gen. Anacantholepis) Decora, Santschi. 



Loc. cit., p. 36, Q 



^3. 1"6-1'8 mm. Bright ochreous or amber yellow, the head with 

 a reddish tinge in many specimens. Cheeks in front of the eyes, 

 the apical third or more of the flagellum, the bases of the femora, 

 the peduncle of the petiole and a spot on the sides of the first two 

 abdominal segments brown. The spots on the abdomen are variable 

 in size, sometimes limited to a triangular patch near the apical 

 margin, and in other cases covering the whole of the sides of the 

 segments. Smooth and shining, only the antennae slightly dull. A 

 microscopic pubescence on the antennae, and a few brownish, sub- 

 erect hairs on the margins of the abdominal segments, otherwise 

 almost glabrous. Head subrectangular, with the corners widely 

 rounded, the sides and posterior margin moderately convex, one fifth 

 longer than wide. Eyes placed well in front of the middle of the 

 sides. Clypeus and its anterior margin convex. The scape extends 

 beyond the posterior margin of the head by a little less than the 

 length of the 1st joint of the flagellum; the latter is longer than the 

 '2nd and 3rd joints taken together. Pronotum convex, about as long 



