276 



CLAUDK FULLER. 



Major Worker.— The antennse are of XVIII or XVII 

 joints. The XVIII forms (fig. 9, h) are rarely met with, but 

 express the full development of the organ for this caste. The 



XVII (c) are characterised by a gross or bilobate IV which 

 represents a more or less complete fusion of IV, V of the 



XVIII organ— i . e . (15 + 14) . Thus it may be a simple coarse 

 joint or show any one of the phases represented by fig. 9, 



Minor Worker.— These are XVII-jointed (fig. 9, d),and 

 Text-fig. 9. 



Odontotermes latericius (Hav.). «. Imago. 6, c, j'-m. Major 

 worker, d. Minor worker, e-i. Soldier. 



in them IV is always coarser than either III or V. It has, 

 however, all the appearance of being a simple joint. 



Soldier. — Only one soldier has been found with a pair of 

 XA^-jointed organs (fig. 9, i), in both of which IV was very 

 noticeably compound. They are therefore to be regarded as 

 aberrant reductions of the XVI expression (fig. 9, h) and due 

 to the fusing of IV, V thereof— i. e. (13 + 12). There are 

 three types of XVI-jointed organs: one (fig. 9, h) in which 

 III is short, a second (fig. 9, g) in which it is longish and 

 compound, and a third (fig. 9,/) in which it is longish and 

 simple. The XVII-jointed organs (fig. 9, e) are characterised 

 by the smallness of III and the grossness of IV; it is very 



