430 CLAUDE FULLER. 



frons. Dorsal outline broadly U-shaped; almost as long as 

 wide, not broader behind than in front; Y-sutvire distinct; 

 vertex roundly arched, more arched than transvaalensis, 

 and occipital region inflated ; sides nearly sti-aight, slightly 

 curvate; trochantin of mandible strong and prominent. 



Frons deflected ; without transverse ridge or brow ; almost 

 flat with paired median impressions between ocelli; merging 

 into depressed region of clypens; frontal folds very distinct. 



Eyes black, sub-reniform, facing more forwards than out- 

 wards. 



Ocelli represented by distinct, irregular-fusiform pits. 



Clypeus with epistome : margin truncate, sides more or less 

 obliquely rounded. 



Labrum broad, longer, and with a more acute apex than 

 in transvaalensis, and longer and a little less tapering 

 sides. 



Mandibles light i-ed with teeth and apical points black. 

 Dentation and form very similar to that in transvaalensis 

 but more highly polished ; longer and narrower ; margin 

 below second tooth of left with two incisions and one distinct 

 scallop. Apical point and distal tooth of both mandibles 

 sometimes duplicated. 



Antenna yellow; whip-like; as with transvaalensis; 

 joints III to V very variable, sometimes III, IV, and Y equal 

 and small, sometimes III larger than TV, or IV than III, in 

 which case the larger joint usually presents a pseudo-articula- 

 tion and two whorls of bristles ; number of joints ranging 

 from about twenty- seven to thirty. 



Post-genee and gula much as with transvaalensis, but 

 inserted stem of gula longer and widening more sharply 

 into blade ; blade more rectangular with sides faintlj^ in- 

 curvate. 



Thorax. — Almost uniformly dull yellow ochre, with quite 

 inconspicuous paired dots on shields of meso- and metanotum. 

 Agrees in structural details with transvaalensis, except 

 (1) the lateral processes do not project so much, and, as a 

 consequence, the mesonotum appears as wide as the pronotum ; 



