THE SOLDIERLESS TERMITES OF AFRICA 199 



Pcl/W, 0-26, posterior margin indistinct but more or less evenly rounded, median suture weakly 

 developed. Apical teeth of mandibles short, L A /Li, 0-54, R A /Ri, 068; subsidiary marginal 

 tooth of left mandible just clear of molar prominence in surface view, complex ratio, Lx/LiXm, 

 9-97; points of apical and marginal teeth of right mandible approximately in line, anterior 

 edge of first marginal distinctly shorter than that of second, complex ratio, Ri/RaRhi (note 

 difference from ratio used in worker caste), 280. Pilosity of head capsule short, dense, uneven, 

 yellow-brown, not forming a pelt. 



Measurements (one specimen) in millimetres. 



Head width across eyes (W) . . 080 



Ocellus (O w x Oi) . . . 0-07 x 010 



Ocellus to eye (O-E) . . . 004 



Postclypeus length (Pel) . . 0-21 



Antennal article III . . . 004 



Antennal article IV . . . 005 



Antennal article V . . . 005 



Left mandible, apical to first mar- 

 ginal (L A ) .... 008 



Left mandible, first to third mar- 

 ginal (L,) . . . . 01 4 



Left mandible, third marginal to 



molar (L m ) • • • • 005 



Right mandible, apical to first 



marginal (Ra) .... 008 



Right mandible, first to second 



marginal (Ri) .... on 



Right mandible, second marginal 



to molar (R m ) • • • 005 



Mesonotum width (M) . . . 018 



Metanotum width (N) . . . 018 



Worker. Head capsule yellow-white, pilosity fine, short, fairly numerous, pale yellow. 

 Postclypeus rather strongly inflated, Pcl/W, 032, Pcl/Ri, 2-07. Apical teeth of mandibles 

 short, La/Li, 0-49, R A /Ri, o-6i ; subsidiary marginal tooth of left mandible just clear of molar 

 prominence in surface view, complex ratio, La/Li. L m , 10-89; point of first marginal tooth of 

 right mandible distinctly behind line of apical to second marginal, anterior edge of first marginal 

 shorter than that of second, Ra/Ri-Rih, 1580. Fore tibia scarcely swollen, Ti/T w , 4-59, third 

 apical spur about half length of other two, but pale and hard to see. Mesenteric overlap with 

 proctodeum about four times as long as width of mesenteron at insertion of malpighian tubules; 

 enteric valve seating with two moderately developed opposed lobes and a smaller third inner 

 lobe, connected to second pouch of proctodeum by a short neck, lateral in unopened abdomen ; 

 internal cushions of enteric valve all retracted, about equally developed, with scaly surface 

 only; membranous wall of valve between and beyond cushions with sparse minute spicules. 



Measurements (one specimen) in millimetres. 



Head width (W) 069 



Fore tibia width (T w ) .... on 



Fore tibia length (Ti) .... 0-49 



Postclypeus length (Pel) . . . 0-22 



Left mandible, apical to first marginal (La) 006 



Left mandible, first to third marginal (Li) . 0-13 

 Left mandible, third marginal to molar 



(Lm) 0-05 



