i8 



W. A. SANDS 



Eyes relatively smaller in proportion to head-width, W/E index over 2-8, ocelli 

 further from eyes, O-E distance 004-0 13mm. ...... 



Smaller, W, 1 -04-1-18 ; E, 0-41-0-51 ; O, 009-011 x 0-11-0-14 '• T 3 1-25-1-38 

 (W. Afr., Congo, Uganda) ....... elegantulus 



Larger, W, 1-20-1-36 ; E, 0-48-0-53 ; O, 0-13-0-16 x 0-16-0-20 ; T 3 , 1-38-1-64 

 (E, Central, S. Afr.) ......... kempae 



T 3 shorter in proportion to W, T 3 /W index i- 10. .... fulleri 



T 3 longer in proportion to W, T 3 /W index over 1-15 . 



Lateral extensions of " fork " of fontanelle wide, reaching half way to ocelli 



camerunensis 



Lateral extensions of " fork " short . 



4 



(P- 30) 



(P- 39) 



(P- 34) 



5 



(p. 26) 

 6 

 (p. 20) 

 (P- 37) 

 (P- 45) 



schoutedeni (p. 48) 



9 



Cerci of female shorter than width at base . .... arborum 



Cerci of female as long as width at base .... infuscatus 



Smaller, E under 0-42, W under 1-33 ...... lujae 



Larger, E over 0-44, W over 1-33 



Smaller, W, 1-35-1-40 ; T 3 under 1-68 



Larger, W over 1-42 ; T 3 over 1-75 



Head capsule width immediately behind eyes approximately equal to length to 



front of postclypeus ........ latifrons (p. 41) 



Head capsule width behind eyes slightly less than length to front of postclypeus 



chrysopleura (p. 27) 

 Soldiers 



Whole head capsule and nose with numerous scattered long yellow setae 



hirticeps (p. 36) 



Head capsule with few (0-8) , more regularly arranged setae, nose with setae con- 

 centrated at tip ............ 2 



Tip of nose markedly hairy (Text-figs. 40, 54, 65, 70, 74, 80, 82, 91, 96) . . 3 



Tip of nose with 4 prominent setae, and very few small inconspicuous setae behind 



them, or none (Text-figs. 26, 29, 35, 47, 52, 89) ...... 10 



Postmentum with setae scattered over entire surface (sometimes few and small). 



No long setae on vertex (Text-figs. 78-87) .... latifrons (p. 41) 



Postmentum with setae confined to anterior margin. Two bilaterally placed long 

 setae usually present on vertex ......... 



Antennae 11-12 segmented .......... 



Antennae 13-14 segmented .......... 



Head profile convex from change of contour at base of nose backwards, or nearly 

 straight with slight over-all convexity ; numerous small setae on vertex (Text- 

 figs. 39-45) ......... elegantulus 



Head profile more or less concave, usually slightly angularly so at base of nose ; 

 vertex without such small setae (Text-figs. 51-57) .... fulleri 



Nose, measuring from hind margin of antennal socket, shorter than rest of head 

 capsule ............. 



Nose, measured as above, equal to or longer than rest of head capsule . 



Head profile concave ; nose abruptly tapered at tip (Text-figs. 95-99) (W. Africa, 

 Congo, Uganda) ......... schoutedeni 



Head profile more or less straight ; nose more slenderly and evenly tapered to tip 

 (Text-figs. 62-68) (E. and Central Africa) .... infuscatus 



Smaller, T 3 less than 0-90, head profile convex from change of contour at base of nose 

 backwards, or nearly straight with slight over-all convexity (Text-figs. 39-45) 



elegantulus (p. 30) 



Larger, T 3 over 0-90, head profile straight or more or less concave, or sinuate, or 

 straight to well behind base of nose with raised vertex, rarely with very slight 

 over-all convexity, and these much larger, L over 1 -6r . . . . . 9 





4 

 5 

 6 



(p- 



30) 



(p. 



34) 





7 

 8 



(p. 



48) 



(p. 



37) 



