718 



Annals of the South African Museum. 



punctured, aciculate, 5-dentate. Clypeus moderately convex trans- 

 versely, its anterior margin straight. The scapes extend back as far 

 as the occipital margin. Frontal carinae sinuate. Eyes large and 

 convex, placed behind the middle, as long as their distance from the 

 hind margin of the head. Pronotum, excluding the 

 neck, twice as wide as long in the middle, widest in 

 front, moderately convex above, the shoulders 

 rounded. Both thoracic sutures well defined. Meso- 

 notum twice as wide in front as long, fairly flat 

 above lengthwise. Dorsum of epinotum subquadrate, 

 slightly wider behind than in front, one and a half 

 times wider than long, the posterior margin straight 

 or feebly convex ; declivity longer than the dorsum, 

 vertical in its upper half, concave below. Node of 

 petiole one-third wider than the epinotum, twice as 

 wide as long, seen from above, plano-convex in 

 outline, the convex margin anterior, produced at the 

 sides into several short teeth ; seen from the side, the 

 anterior face convex, the posterior face flat, higher 

 than long and not so high as the level of the epinotal dorsum. 

 Tibiae cylindrical, not setose. 



The smaller $£ have slightly longer scapes and the dorsum of 

 the epinotum more contracted at the bas^. 

 Sawmills, Umgusa Kiver, S. Rhodesia. 



The nest was situated in loose sandy soil and the entrance was 

 surmounted by a tube of woven shreds of grass, hair and pieces of 

 leaves, about f inch high and J inch in diameter. 



Easily distinguished from the other species of the sub-genus by 

 the sharper and wider reticulate puncturation and by the wide 

 and spinose node. 



(S.A.M., R.M., G. A. colls. ; type in my collection). 



Fig. 59. 



G. scabrinodis, 

 thorax and 

 petiole. X 16. 



C. vividus, Smith, race reginae, Forel. 



Cat. Hymen. B.M. VI, p. 31, & 1858. 



(syn. C. Meinerti, Forel, Ann. Soc. Ent, Belg., vol. 30, p. 191, 1886). 



(race) Mitt. Schweiz. Ent. Ges., vol. 10, p. 307, %, & 1901. 



Rev. Zool. Afric, vol. 2, p. 346, 1913. 



2[, 7-8-7 mm. Black, fairly shining all over. Head finely and 

 superficially reticulate-rugulose at the sides and in front, chiefly 



