OBSERVATIONS ON SOMh] SOUTH AFBECAN TERMITES. 461 



No. 4 nest: Barbertoii, Tivmsvaal, elevation 2877 ft., in 

 middle veld bush countiy. 



No. 5 nest : Kimberley, Grricjualaud West, elevation 4012 ft. 

 arid Karroo veld. 



Of the major soldiers enumerated in the first table the 

 length of the head with the mandibles was taken from 

 97 individuals, and it showed a range of from 6'5 to 

 8 mm. Of the whole, only 3 measured less than 7 mm., 

 32 measured between 7"0-7'4 mm., 38 betAveen 7"5-7"9 mm. 

 and 25 measured 8*0-8"4mm. 



In these cases it was found that the ratio of the length of 

 the head with the mandibles to the length of the thorax + 

 abdomen varied widely. The distribution of these ratios is 

 given in the accompanying table : 



