Bull. Ent. Research. Vol. XII. Part 4. 



Plate XH. 



Fig. 1. An unusual type of termitarium of Hamitermes perplexus, sp. n. 

 The track in the foreground has been made by an invading army of ants 



(Ii'idomypmex). 



Fig. 2. Termitarium of H. perplexus invaded by Iridomyrniex, which have 

 entered at holes marked X. The dark portions have been recently added 



by the termites. 



