Range 





Mean 



0-69-0-71 





0703 



007-008 x 



09 



0070 x 0088 



002-003 





002 1 



0-21-0-24 





0228 



002-003 





0022 



003-0 04 





0033 



003 





0029 



012-013 



0120 



004-005 



0046 



0-06-0-08 



0069 



THE SOLDIERLESS TERMITES OF AFRICA 211 



0-67-0-86; subsidiary marginal tooth of left mandible only just clear of molar prominence in 

 surface view, complex ratio, L A /Li.L m , 11-42-12-91; point of first marginal tooth of right man- 

 dible only slightly behind line of apical to second marginal, anterior edges of marginal teeth 

 approximately equal in length, complex ratio, Ri/Ra-Riti (note difference from ratio used in 

 worker caste), 2600-3000. Pilosity of head capsule uneven, yellow, not forming a pelt. 



Measurements (four specimens from two localities) in millimetres 



Head width across eyes (W) . 



Ocellus (O w X Oi). 



Ocellus to eye (O-E) 



Postclypeus length (Pel) 



Antennal article III 



Antennal article IV 



Antennal article V . . . 



Left mandible, apical to first mar- 

 ginal (La) ..... 006-007 0066 



Left mandible, first to third marginal 

 (LO 



Left mandible, third marginal to 

 molar (L m ) .... 



Right mandible, apical to first 

 marginal (K A ) . 



Right mandible, first to second mar- 

 ginal (Ri) ..... 0-09-0- 10 0091 



Right mandible, second marginal to 

 molar (R m ) 



Mesonotum width (M) . 



Metanotum width (N) . 



Worker. Head capsule yellow-white, pilosity sparse, fine, yellow. Postclypeus rather 

 strongly inflated, Pcl/W, 0-35-0-36, Pcl/Ri, 2-66-3-00. Apical teeth of mandibles short, 

 L A /Li, 0-61-0-63, Ka/Rii 0-77-0-78; subsidiary marginal tooth of left mandible just clear of 

 molar prominence in surface view, complex ratio, La/Li. L m , 17-87-18-52; point of first margina 

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

 first marginal shorter than that of second, R A /Ri.Rm. 20-90-21-10. Fore tibia moderately 

 swollen, Tj/T w , 3-85-4-00, third apical spur short, about one-third length of other two. Mesen- 

 teric overlap with proctodeum about four times as long as width of mesenteron at insertion of 

 malpighian tubules, or a little less; enteric valve seating scarcely lobed, almost a rim, sessile 

 on second pouch of proctodeum, dorso-lateral in position 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 very sparse minute spicules. 



Measurements (two specimens from different localities) in millimetres. 



Head width (W) .... 0-60-0-63 



Fore tibia width (T w ) . . . o-io 



Fore tibia length (Ti) . . . 0-38-0-40 



Postclypeus length (Pel) . . . 0-21-0-23 

 Left mandible, apical to first marginal 



(La) 006 



Left mandible, first to third marginal 



(Li) ...... 010 



Left mandible, third marginal to 



molar (L m ) . . . . . 003 



005 



0048 



016-017 



0159 



015-016 



0155 



