130 Annals of the South African Museum. 



# maxima. 8 mm. Head, flagellum and thorax castaneous red, 

 the head a little darker than the thorax, and the petiole lighter, 

 abdomen, legs, and scape reddish yellow. The anterior third of 

 head is finely punctured, microscopically rugulose and dull, the rest 

 of the head above and at the sides is closely and strongly punctured, 

 the space between the punctures smooth and shining. The frontal 

 carinae are finely rugoso-punctate, the mandibles sparsely punctured, 

 smooth and shining. The pro- and mesonotum with larger but 

 shallower punctures than on the head, the epinotum very faintly 

 punctured ; the whole thorax is transversely rugulose and sub- 

 opaque, the rugulosity on the epinotum being stronger, so that that 

 segment is entirely dull. The petiole is very finely rugoso-punctuate 

 and dull. The scape of the antenna, the abdomen and the legs 

 shining, finely and sparsely punctured. The pubescence is very 

 short and scanty on tbe abdomen, and almost entirely absent on 

 the head and thorax ; there are a few long hairs on the clypeus and 

 pygidium, and two or three on each side of the posterior angles 

 of the node. The head is as long as wide, widest in front, narrowing 

 only slightly towards the posterior angles, the posterior margin 

 shallowly emarginate. The posterior margin of the pronotum is 

 arcuate, not angularly emarginate as in badius. The node of the 

 petiole is one and a quarter times wider than longer. The median 

 impressed line is shallow in front of the head and on the vertex, 

 moderately deep posteriorly. The sub-apical tooth of the mandible 

 truncate. Antennae 11-jointed. 



$ . Antennae 11-jointed, 5-3 - 5 mm. These differ from the 

 maxima by having the head proportionately shorter, and wider 

 anteriorly. The colour is also lighter ; the anterior third of the 

 head is less dull, and the thorax is more shining ; the pubescence of 

 the head and thorax more distinct. 



$ . Antennae 10-jointed, 3"l-2-7 mm. The head is only a little 

 less wide than in the smallest of the forms with 11-jointed 

 antennae. The puncturation is, relatively to the size of the body, 

 much coarser. 



£ . Antennae 9-jointed, 3-2 - 6 mm. In the smaller of these 

 the head resembles the preceding group ; in the larger on the 

 contrary, the head is narrower in front than behind, its sides 

 are distinctly convex, and the clypeus projects further forwards. 



£ . 8- or 7-jointed, 2-2-l - 7 mm. In the larger of these, the 

 projection of the clypeus is even more pronounced, but the head is 

 only very slightly narrowed in front ; on the other hand, in the 

 smaller forms, the head is very plainly narrower in front than 



