418 CLAUDE FULLER. 



Avhich is said to be a forked sti'ucture, I can only think that 

 the true labrum is a very atrophied sclerite, and that the 

 so-called labrum is a chitinised extension of the epipharynx^ 

 In nearly all the workers of the Termes species the labrum 

 is distinctly bi-articulate and can only be considered as the 

 labrum-epipharynx. In the Eutermes species there is a 

 pseudo-articulation near to the apex of this sclerite which 

 indicates that its structure is the same but simpler. 



Because it seems the proper thing to do, I have endeavoured 

 to the best of my ability to describe the impressions, grooves,. 

 keels, mounds, etc., of the frons. But it is a wearying matter 

 in most cases, as, with every shifting illumination and every 

 alteration of the point of vision, the aspect changes. Hence 

 my introduction of " kaleidoscopic " into some of the 

 descriptions of the frons and my appreciation of HavilandV 

 remark : " I have not attempted to outdo Nature in distinct- 

 ness; indeed, in this respect I am conscious of shortcomings." 



Upon the whole the frons when impressed and embossed 

 is very variable in the degree of its sculpturing, and the 

 details are so minute, so variable, so indescribable and of sO' 

 little specific value that no more than a loose reference to the 

 nature of this area is really necessary. Indeed, I have found 

 by experiment on my colleagues that no two of us could 

 agree upon the exact nature of the frons-sculpture of either 

 Termes natalensis or T. badius. 



Legs. — In certain species the tibia of each leg appears to 

 be two-segmented; the differentiation being more or less 

 distinct in different species. This arachnoid feature may 

 possibly be looked upon as indicating a primitive character. 



Antennae. — The growth of the termite antenna after the 

 hatching of the young termite may be said to be due to the 

 production of a series of intercalated joints in a vegetative 

 manner. This development has not been actually traced, but 

 it may be deduced with some confidence. If, for example, 

 T. badius is examined it is found that the imagos have 

 antennge of 19 joints whilst the adults of other castes may 

 have less; the major workers presenting 19, 18, and 17 



