THE SOLDIERLESS TERMITES OF AFRICA 145 



meso- and metanota, sepia-brown, transverse dark sutures distinct; femora yellow-brown, 

 tibiae paler, tarsi yellow. Abdominal tergites sepia-brown with darker dorsal stigmata, 

 sternites brown laterally, pale yellow-brown in middle, ventral stigmata sepia-brown; cerci 

 pale yellow-brown. 



Posterior margin of head capsule slightly undulating, not quite evenly rounded; ocelli 

 medium sized, separated from compound eyes by slightly less than half up to two-thirds own 

 least diameter; postclypeus strongly inflated, Pcl/W, 0-31-0-33, posterior margin evenly rounded, 

 median suture strongly developed. Apical teeth of mandibles fairly long, L A /Li, 0-68-0-76, 

 R A /Ri, 0-92-0-99; subsidiary marginal tooth of left mandible just clear of molar prominence 

 in surface view, complex ratio L A /Li.L m , 11-59-12-18; point of first marginal tooth of right 

 mandible only very slightly behind line of apical to second marginal, anterior edge of first 

 marginal distinctly longer than that of second. Pilosity of head capsule sepia-brown, rough, 

 uneven, not forming a pelt. Meso- and metanota rather narrow at constriction, M/YV, 0-25-0-28. 

 Fore tibia with third apical spur vestigial, one-fifth or less length of other two (in type-series, 

 specimens from another colony have them well developed). 



Measurements (four specimens from two localities) in millimetres. 



106 





Range 



Mean 



Head width across eyes (W) . 



0-98-1-06 



1-015 



Ocellus (O w x Oi). 



008-009 X OIO-OII 



0080 x 



Ocellus to eye (O-E) 



004-006 



0048 



Postclypeus length (Pel) 



0-30-0-35 



0321 



Antennal article III 



0-03-0-04 



0030 



Antennal article IV 



— 



0047 



Antennal article V 



— 



0051 



Left mandible, apical to first 







marginal (L A ) • 



011-012 



O-III 



Left mandible, first to third 







marginal (Li) 



015-016 



0-156 



Left mandible, third marginal 







to molar (L m ) 



— 



0060 



Right mandible, apical to first 







marginal (R A ) . 



010-012 



OIIO 



Right mandible, first to second 







marginal (Ri) 



011-012 



0113 



Right mandible, second mar- 







ginal to molar (R m ) 



006-007 



0066 



Mesonotum width (M) . 



0-24-0-29 



0271 



Metanotum width (N) . 



0-23-0-30 



0272 



Worker. Head capsule and pilosity pale yellow, setae sparse. Postclypeus strongly in- 

 flated, Pcl/W, 0-33-0-35. Apical teeth of mandibles long, L A /Li, 0-81-0-82, R A /Ri, 0-97-1-00; 

 subsidiary marginal tooth of left mandible well clear of molar prominence, separated from it 

 by distinct notch in surface view, L A /Li.L m , 20-75-21-20; anterior edges of first and second 

 marginal teeth subequal, R A /Ri.R m , 22-80. Fore tibia scarcely swollen. Ti/T Wl 5-25-5-30, 

 third spur vestigial, one-quarter or less of length of other two. Mesenteric overlap with proc- 

 todeum approximately twice as long as width of mesenteron at insertion of malpighian tubules, 

 anterior end of proctodeum touching malpighian knot; enteric valve seating dorsolateral in 

 unopened abdomen; internal cushions of enteric valve all equally fairly distinctly developed, 

 with scaly surface, posterior margin of each scale bearing one small point or spine. Mem- 

 branous wall of valve beyond cushions with numerous minute spicules tending to be arranged 

 in rows. Other characters in generic diagnosis. 



