638 Annals of the South African Museum. 



the race. The femora in this variety are slightly darkened towards 

 their apices. The spots on the abdomen are also dark reddish 

 ochreous, but nevertheless brighter than in Liengmei, and quite dis- 

 crete, even on the 3rd segment. The scape is a trifle shorter, only 

 just reaching beyond the hind margin of the head. Otherwise iden- 

 tical with the type of the race. 

 Bulawayo. (G.A. coll.). 



Var. y. 



(syn. race manzer, var. contaminatus, Santschi, Ann. Soc. Ent. France, 

 vol. 85, p. 291. 1916). 



9j.. Like var. 8 differing from it only as follows: 



The colour of the head is lighter, being dark brown rather than 

 black, and showing a reddish tinge over the occipital lobes. The dark 

 reddish brown colour on the thorax is confined to the upper surface 

 of the pro- and mesonotum, all the rest, including the promesonotal 

 suture being of a dark reddish ochreous. The petiole is very dark 

 brown or black, (ochreous in var. 8), and the tibiae and tarsi are 

 ferruginous instead of black. The abdominal spots are much darker 

 than in var. 8, and less clearly defined. The two faces of the epi- 

 notum form an almost continuous curve, whereas in var. 8 there 

 is a very obtuse or wide, but nevertheless appreciable angle between 

 them. The scale is slightly more convex in front and less trenchant, 

 above. Otherwise like the 9J. of var. 8. 



Q media, 11 "4- mm. Like the § media of Liengmei but smaller, 

 the thorax entirely ochreous, although somewhat infuscate above, the 

 femora entirely bright ochreous, the head brownish ochreous. The 

 eyes are less convex than in Liengmei. 



^ minor, 9*5 mm. Like the ^ media excepting the usual differences 

 in the shape of the head which exist between the two castes. 



Matopo Hills, S. Rhodesia. 



(R.M., G.A. colls.). 



Var. d. 



Like var. y in every particular except the colour. The dark 

 colour on the head (and abdomen) is black and not brown, and the 

 dorsum of the pro-mesonotum is also black, and unlike var. y, this 

 black colour extends over the mesonotum and the dorsum of the 

 epinotum. The sides and ventral surface of the thorax, the petiole 

 and the femora are of a much paler ochreous yellow than in var. y\ 

 so that the contrast between the two colours is much greater. This 



