400 CLAUDE FULLER. 



little distance off by the trinervius community ; in several 

 instances this has been begun before the colony has been 

 altogether dislodged. 



It is not argued that bilobatus raids the nests of trinei'- 

 vius, although upon two separate occasions correspondents in 

 Natal have sent to the writer specimens of bilobatus, which 

 they had taken from columns of workers found migrating in 

 daylight over the surface of the ground. It is rather thought 

 that just as pairs of trinervius will burrow into a hive of 

 bilobatus so couples of the latter will bui^row next to a hive 

 of trinervius, and when the latter is not exceptionally 

 strong their progeny will evict it. 



As nests of bilobatus are also found under stones it is 

 concluded that they take equal advantage of the nest struc- 

 tures of a nasutu Eutermes, closely allied to trinervius, 

 which nests in such situations. 



One extraordinary and large nest with a globular mound 

 found in a wattle plantation at Mt. Edgecombe cannot be 

 accounted for unless it was originally a large clod of earth, 

 left when the land was broken up for planting, which had 

 been converted into a nest and enlarged. Probably the 

 abnormal conical mound, of which form only two examples 

 have been observed, shown in PI. XXXI, figs. 8 and 9, is only 

 abnormal because rare. 



E, bilobatus nests have been found completely surround- 

 ing those of the undetermined species allied to E. parvus. 

 These are similar in architecture to those of bilobatus, but 

 being built of carton, and owing to their ligneous nature, 

 bilobatus does not invade them. Moreover, the other 

 species possesses passage-ways through the bilobatus nest; 

 using the cells and communications of the latter but lining 

 them with carton. Whether this inference is correct, or 

 whether the undetermined species builds its nests in those of 

 bilobatus, gradually replacing the clay by their own building 

 material, it is impossible to say upon the evidence at hand. 



Here it may be mentioned that the process of dislodging 

 carried out by bilobatus upon E. trinervius has its 



