922 THE NATURALIST IN 
AUSTRALIA. 
these thickly clustered tentacles that the commensal fish nestled for shelter, as within 
the more voluminous tentacular folds of the isolated Discosome. 
This socially consorting sea anemone was found on closer examination to 
correspond very nearly with a new species observed in 
and described by the writer in his “Great Barrier” 
BLADDER-TENTACLED ANEMONES, Physobrachia sp. 
W. Saville-Kent, Photo. 
ONE-THIRD NATURAL SIZE. 
Torres Straits, and figured 
volume under the title of 
Physobrachia Douglasi. The 
most marked peculiarity of 
this type was the contour of 
the tentacles, which in their 
condition of full extension 
were inflated in a bladder- 
like manner at their distal 
extremities. The shafts of 
the tentacles of the Western 
Australian examples were 
usually either a transparent 
dark myrtle green or a clear 
brown, and the inflated ex- 
tremities pure white or palest 
lilac with a minute crimson 
apical tip. A fairly success- 
ful photograph of a small 
area of a reef crevice thickly populated with this particular anemone, necessarily 
taken vertically through the surface of the water, is reproduced in the accompanying 
illustration. This anemone group represents one of many that were observed on the 
reefs at Gantheaume Point, Roebuck Bay, but with which no fish commensals, as at 
the Lacepede Islands, were found consorted. 
A characteristic Sea 
Anemone that was obtained 
by the writer in Beagle Bay, 
Western Australia, midway 
between King’s Sound and 
Roebuck Bay, is illustrated 
by the photographs  repro- 
duced in the upper moiety of 
Condylactis sp. 
Plate XXXIX. Unlike the 
preceding forms, it is not a 
rock or reef dwelling species, 
but takes up its abode on 
the sandy foreshores, having a 
long cylindrical column, which 
extends five or six inches 
through the sand to a stone 
