Vol. IX, Nos. 8-9.] Biological Work of the ‘‘ Investigator.’ 341 
[V.8.] 
of commensalism : it formed a habitat for numerous Polychaet 
worms and small Ophiuroids, which were living in tubes and 
several specimens of a species of Balanus: these belong to the 
genus Acasia, and probably represent a new species. A single 
small Gebia, sp. was also found inhabiting a — cavity in the 
middle of the sponge; this cavity was about 14” long and had 
three openings on the surface, while at the extreme blind end 
was living a small colony of Ophiuroids. 
On the east side of Tavoy Point, at the entrance to Tavoy 
sand we get 
ere the editbas —fialesilions abounds and a single 
immature, and a single large example of Neptunus pelagi- 
cus. 
During my second visit to Byikhwaaw Bay, an expedition 
was made to Reef Island, which lies close to the right bank of 
the river near the mouth, for the purpose of obtaining speci- 
mens of the whip-scorpion Hypoctonus binghami, Oates, which 
is known to frequent this island. Unfortunately no examples 
genes embedded in mud: specimens of Periophthalmus koel- 
euteri and a single example of a crab were found, but with these 
sebephinin, the shores appeared to be uninhabi ted. 
SLAND Stations.—A chain of islands extends down the 
whole length of the coast in this region ; to the north, off the 
coast between Hinzé Basin and Tavoy Point, are the North, 
Middle, and South groups of the Moscos Islands, while to the 
south of Tavoy River lie Tavoy Island and Tron varitg as 
well as numerous others too small to merit a specific n 
everal occasions I was able to land on the ‘ialanuds 
three pal so I will therefore ape Baga together. In 
every case the shore consists for the most part of rock and 
boulders with an occasional sandy bay. The general fauna is as 
follows : 
so 
ca of the islands in the Moscos Archipelago are me, 
from time to time by the Burmese fishermen as their head- 
qu fartens during fishing expeditions; a few huts are ~~ 
