32 Dr. C. Collingwood on Gigantic Sea-Anemones. 
orange, and the body vertically banded with broad rings of 
opaque white and orange alternately, three bands of each. As 
the fish remained stationary, and did not appear to be alarmed 
at my movements, I made ineffectual attempts to catch him ; 
he always eluded my efforts, not darting away, however, as 
I expected he would, but always returning to the same spot. 
Wandering about in search of shells and animals, I returned 
from time to time to the great Anemone, and each time 
I found the fish there, in spite of all my disturbance of it, 
This singular persistence of the fish in keeping to the same 
spot, and to the close vicinity of the great Anemone, aroused 
in me strong suspicions of the existence of some connexion 
between them. 
These suspicions were subsequently verified; for on the 
reefs of Pulo Pappan, near the island of Labuan, I met with 
more than one specimen of this gigantic Actinia, and the fish, 
so unmistakeable in its appearance when once seen, again in 
its neighbourhood. Raking about with a stick in the body of 
the Anemone, I by degrees dislodged six fishes of the same 
species, and of various sizes, from the cavity of the zoophyte ; 
and this time, being provided with a hand net, I had no diffi- 
culty in capturing them all. Thus the connexion existing 
between the fish and the Anemone was demonstrated, though 
what is the nature and object of that connexion remains to be 
proved. , 
There are at least two species of these Anemone-inhabiting 
fish ; and a second species of the same genus differs from that 
just described in having black and cream-coloured vertical 
bands, instead of orange and white. Such a fish I have seen, 
evidently closely related to the first described, in the pos- 
session of Mr. Hugh Low, of Labuan, who in times past had 
made many excursions to the reefs, and had become acquainted 
with this fact. Mr. Low had it then living in a tub which 
did duty as an aquarium, having obtained it some months 
before from the body of what was probably a second species of 
fish-sheltering Anemone. The fish was remarkably lively 
and knowing, and lived in good health in the tub for several 
months—a proof that the connexion between these animals, 
whatever its nature, is not absolutely essential, for the fish at 
least. 
It has long been known that there is a Holothuria (H. ana- 
nas) which harbours a parasitic fish. The Holothuria and its 
fish are figured in the ‘ Voyage of the Astrolabe ;’ and such a 
Holothuria inhabits the reefs about Labuan ; but its fish bears 
no resemblance to those I have described, not indeed belong- 
ing to the same piscine family. 
