340 THE GREAT BARRIER REEF. 



CHROMO PLATE II. 



ILLUSTRATING THE GREAT BARRIER REEF GIANT ANEMONE. 



DiscosoMA Haddoni, n.sp., pp. 32 and 145. 



Segments of the disks, representing about one-sixth only of their entire superficial areas in two 

 diversely coloured polyps, are here delineated, natural size. 



Isolated tentacles with their inflated apices, slightly magnified, are represented in lateral view, 

 (thus showing their columnar stalks) near the top and bottom margins of the plate. 



The fish, Amphiprion biciiictits, in this illustration (having only two white bands) is a commensal 

 with Discosoma Haddoni, in the same manner as the three-banded species in the preceding- 

 plate is associated with Discosoma Kenti. 



The Prawn, Palaemon sp., in the right-hand upper corner, also lives commensally within the body- 

 cavity of this anemone, only, however, in individuals that are not tenanted by the fish. 



