MARINE MISCELLANEA. 219 
presence of a brilliant scarlet parasitic sponge, which had apparently killed the coral 
and permeated itself throughout its - skeletal tissues. In this manner, this sponge 
species possessed much in common with the orange-coloured British parasitic type, 
Cliona celata, which, as is well known, bores into and in time will completely 
infiltrate and destroy the shells of oysters and other molluscs. Several of the solid 
forms of Madreporide, representing such genera as Favia, Celoria and Goniastrea, 
were thus found to be completely infiltrated with this sponge. Specimens were 
secured, and have been contributed to the British Museum, but it is to be 
regretted that the scarlet pigment tissues of the parasitic organism lose all their 
colour soon after removal from their native element. 
The Sea Anemones observed by the writer on the Roebuck Bay reefs, and 
indeed on the Western Australian coast generally, were, in almost all instances, 
identical with types met with in Torres Straits and on the Great Barrier, and have 
for the most part been already figured or described in the author’s volume bearing the 
above-named title. At the same time additional observations were made, and 
satisfactory photographic pictures secured of certain of these species, which invite a brief 
notice or reproduction in this Chapter. Among the more noteworthy of the species 
recorded from the Queensland coast were two giant forms, referable to the genus 
Discosoma, whose expanded discs might measure as much as, or more than, eighteen 
inches in diameter. The author’s friend; Professor Haddon, a specialist in this-branch 
of zoology, having collected one of these types in Torres Straits, paid the author the 
compliment of associating it with his name, and he has in reciprocation conferred on 
the second species the title of Discosoma Haddoni. The most interesting feature 
concerning these giant Anemones, recorded by the writer in his “Barrier” book, is the 
circumstance that both of these two species fulfil the réle of hosts to fish belonging to 
the genus Amphiprion, a distinct specific form being consorted as a so-called “com- 
mensal” or lodger with each variety of anemone. Coloured drawings of these two 
species, with their respective commensal fish, are included in the author’s previous 
volume, as also a photograph, taken vertically through the water, of Discosoma 
Haddoni. 
In Western Australian waters, and more particularly in the vicinity of the 
Lacepede Islands, the writer found the species upon which Professor Haddon has 
conferred the name of Discosoma Kenti, in more abundance. It was here also 
accompanied by a fish commensal—in fact, two distinct varieties—but neither of these, 
though belonging to the same genus, was specifically identical with the species found 
