'266 CLAUDE FULLER. 



(2) TeiMiies waterbergi Fuller. Fig. 6, a-t. 



Antennal Index. — Imago XIX, XVIII (XX) ; major 

 worker XIX; minor woi'ker XVIII, XVII; major soldier 

 XIX, XVIII, XVII ; minor soldier XVII. 



Although related to T. bellicosus and T. natalensis 

 this species is more generalised, and its antennse, especially 

 those of the imago and major soldier, may be regarded as 

 being transitoiy or unstable. A further study may show the 

 homologies to be upon a slightly different basis, because 

 perhaps certain joints herein treated as simple may have 

 been evolved from the amalgamation of paired joint-elements. 

 That simple joints now always simple may have been so 

 evolved follows the general process of specialisation by 

 reduction, and is not in antithesis with any deduction or 

 explanation previously or subseqviently given. To take the 

 possibility fully into consideration here or in dealing with 

 antenna3 of other species would entail involved explanations 

 and serve no useful present purpose. 



The only castes of T. waterbergi in which I have found 

 constant antennas are the major worker and minor soldier; 

 the organs of these, as indicated in the antennal index, are 

 respectively XIX- and XVII-jointed. 



Imago Antenn.^. — Although in pairs of antennie the 

 arrangement of the joints agrees, there exists a noticeable 

 inconsistency as between the pairs of different individuals. 

 This IS quite unusual for the caste with species in general. 

 However, the variations met with are all due either to 

 capricious unions of sister-joints or to the more usual union 

 of the conventional IV with III. As a rule these unions are 

 readily recognised by the presence of fairly distinct pseudo- 

 articulatious or, when such are absent, by the elongate nature 

 of the compound joint. Virtually the antennee are all of XX 

 segments, but count XIX or XVIII by the suppression of 



Text-fig. 6. — Termes waterbergi Fuller. Diagrams a-e 

 ilhistrate antennae of imagos,/-j of major soldiers, and Jc-t 

 indicate the homologies for all castes. 



