522 Annals of the South African Museum. 



with a slight gloss. Head very finely and closely rugulose, and behind 

 the vertex also microscopically reticulate ; the sculpture is more or 

 less effaced on each side of the frontal sulcus, leaving a more shining 

 area which is sparsely and finely punctured. The sculpture around 

 the antennal pits a little stronger. Mandibles dark ferruginous, 

 finely striate and sparsely punctured. Thorax and petiole regularly 

 and finely reticulate, the upper face of the 1st node very super- 

 ficially sculptured. Abdomen smooth and shining, microscopically 

 alutaceous. Legs smooth and shining. Head a trifle wider than 

 long, the sides feebly convex, the posterior margin very shallowly 

 concave in the middle. Frontal area distinct, the frontal sulcus more 

 or less clearly defined and ending beyond the middle of the head. 

 The scape falls short of the occipital margin by about the length of 

 the eye. Second joint of the flagellum as wide as long, 3rd-5th wider 

 than long. Posterior corners of pronotum slightly tumid, not 

 marginate. Promesonotal suture fairly deep and wide at the sides, 



Fig. 42. — C. bulawayensis, Forel. 



very shallow across the middle third. Median tubercle of mesonotum 

 very prominent, elongate but hardly carinate. Declivity of mesonotum 

 oblique, obtusely marginate at the sides, forming one-third or less of 

 the mesonotum ; the latter is about oue and a-half times longer than 

 wide at the base. Meso-epinotal suture deep. Dorsum of epinotum 

 much wider than long, widening towards the apex, distinctly convex 

 at the base when seen in profile, its sides external to and not 

 continuous with the outer margins of the epinotal teeth. The latter 

 divergent, short, very little longer than their basal width, subtri- 

 angular. First segment of petiole trapezoidal, as long as wide in 

 front, or a little longer, the anterior corners fairly angular, the 

 anterior margin straight, the ventral lamella ending in front in a 

 small tooth. Node of 2nd segment wider than long, divided by a 

 shallow longitudinal groove which is deeper behind, the posterior 

 margins of the discs prominent. 



Bulawayo. (S.A.M., E.M., G.A. colls.) 



I am obliged to unite to this species the var. oracliim, Forel, of 

 C. gallicola, Forel. Apart from the smaller size and paler colour, 

 there are no differences of any value. It is true that in some of the 

 specimens (no. 30) determined by Dr. Forel as oraclum the mesonotal 



