BARBADOS-ANTIGUA EXPEDITION 209 
orange. One specimen had the body near the foot colored a 
bright yellow. This magnificent anemone was found attached 
to loose stones in shallow water in Falmouth Harbor and some- 
times on dead Manicina heads. 
Aptasia annulata attached itself to the under sides of rock 
and in deep crevasses from which it was hard to loosen it. The 
tentacles are barred clear translucent brown and _ whitish. 
This is the species which harbors the ‘‘pistol crab’’ already 
mentioned that thumps the fingers of the collector with the end 
of its relatively immense chela, a most peculiar and unexpected 
sensation that makes one jump as if subjected to a sudden 
electric shock. 
Several of the anemones have not as yet been even approx- 
imately identified. One is a large form with an inner circlet of 
tubular tentacles surounded by a mass of densely dendritic 
branchie of brownish color. One of the most strikingly colored 
anemones had the stomodeum bright green, disk transparent 
chocolate brown surrounded by a belt of deep blue, one and 
one-half centimeters wide. The tentacles near the center of the 
disk are tipped with light grey. Outside of these are others 
tipped with light orange. The walls are in general brown, but 
sometimes plum colored. This form resembled the polyps of 
Manicina in that it multiplied by a sort of longitudinal fission, 
several polyp-mouths appearing without an entire separation 
of the polyps, as in the confluent calyces of Manicina or Mean- 
drina. Sometimes seven or eight mouths are seen in a single 
specimen, much as in the photograph of Mussa fragilis given by 
A. E. Verrill in ‘‘The Bermuda Islands,’’ Part V, plate XX XI, 
fig. 1. Another form had the body deep rich maroon thickly 
beset with nodules of green, and the disk completely covered 
with moss-green tentacles. One very small anemone was found 
growing on an alga. It was yellowish in color. A number of 
social actinians were found, forming a tough leathery encrus- 
tation on the rocks. They are covered with grains of sand 
which seem to be incorporated in the integument and tentacles 
and are also found in the walls between the polyps. 
The only Scyphomedusa collected was an Aurelia, abundant 
in St. John’s Bay. It differed in color from any that I have 
