OBSERVATIONS ON SOME SOUTH AFRICAN TERMITES. 443 



vaalensis except that (1) the anterior margm of the 

 pronotum is almost semi-circular and entire, (2) the pro- 

 cesses more like sessile bat's ears, (3) the mesonotum 

 distinctly broader than the pronotum and processes, (4) the 

 metanotum is broader than the mesonotum, (5) the colour is 

 different. 



Legs pale reddish-yellow ; having 2 or 3 spurs to tibia of 

 I ; 2 or 4 to that of II ; and always 3 to that of III. Analysis 

 of 14 gives : six with 2-4-3, two with 2-3-3, three with 

 3-3-3, three with 3-4-3. 



Abdomen. — Bright yellow. 



The soldier of havilandi is distinctly different from that 

 here described as mossambicus; the chief points of differ- 

 ence being (a) the more circular head outline, [h] in colour, 

 (c) in size-range, (d) in the character of the mandible. 



Worker. 



Measurements. — Head-widths 2 to 3'5 mm. : total leng-th 

 7 to 10"5 mm. 



Antennte about 29 to 33 joints. 



Except that (1) the prevailing colour of the workers of this 

 species is chestnut brown and not black-brown, and (2) the 

 largest workers do not reach the maximum size of those of 

 mossambicus, and the smallest are much smallei-, there 

 appears to be little difference between the workers of the 

 two species. The description for the worker of preto- 

 riensis applies in genei'al, but the V mark of the frons is 

 absent. 



Hab. — Natal; Weenen, Colenso (the valley of the Tugela 

 River) , 



The habits of this species agree with those of H. trans- 

 vaalensis. It is often very destructive to lucerne crops. 

 When infested lands are irrigated the insects suspend opera- 

 tions. 



The species is very local and not found far from alluvial 

 soil. 



VOL. 3, PART 2. 30 



