462 CLAUDE rULLER. 



The curvature of the head varies within certain limits 

 sufficiently to give that organ quite different appearances ; 

 this occurs in the case of both major and minor soldiers. 

 The dorsal outline is always horse-shoe shaped, but may be 

 attenuated, in which case the length exceeds the width ; or it 

 may be more clumsy, in which case the length more nearly 

 approaches the width, and the thickness of the head is 

 increased. In the major soldiers the usual proportion of 

 length to width is 5 to 4, and this may vary to 4 to 4. The 

 shortening of the head adds to its thickness and the alteration 

 of its outline, and the measurements taken appear to indicate 

 that the head of the major soldier tends to reach a certain 

 capacity, and the shortening of one dimension is compensated 

 for by an increase of another dimension. 



It should be added that the greatest deviation from the 

 normal, e.g. from the attenuated and more or less flattened 

 head, was found in the case of certain Pietermai'itzburg and 

 Weenen material, the soldiers presenting a strikingly angled 

 meson otum. 



Termes swazi^e, sj^. n. PI. XXXIV, fig. 11. 



Major Soldier. 



Measurements. — Total length, 20 to 22-2 mm.; head 

 with mandibles, 9 to 9"5 mm. ; head-width 5'6 to 6 mm. 



Head. — Massive; rich dark chestnut-brown with a long 

 median and dark stripe; generally paler on gence and ventral 

 genas ; distal margin of clypeus obscurely yellow (the colour 

 of the head of the major soldier in sharp contrast with that of 

 the minor). Vertex broadly arched and somewhat flat; dully 

 polished, with scattered, fairly stout reddish bristles, a pro- 

 minent group on the frontal area. Dorsal outline somewhat 

 jar-shaped; caudal margin very flatly curvate with rounded 

 corners; sides sub-parallel or tapering and flatly curvate, 

 constricted and incurvate a little posterior to antennal fossae. 



Fontanelle very distinct, black, with a few radiating 

 wrinkles ; Y-suture absent. 



