12S 
ST. HELENA. 
Order Siphonata. 
Teredo, Linn. 
T. navalis ? Linn.— The Common Sea-Worm inhabits also that por- 
tion of the South Atlantic around St. Helena, and is as destructive to 
timber under water as in other parts of the world, but fortunately it 
has little opportunity for exhibiting its destructiveness at the Island; 
the sea-bottom being too hard and rocky to admit of driving piles* 
there are no piers or sea-works of timber in existence. 
III. CCELENTEEATA. 
CLASS I.—ACTISTOZOA. 
Order Coralligena. 
The absence of coral at St. Helena is remarkable. With the 
exception of one species there is none on the coast, and but two 
or three kinds have been discovered in deep water. These have been 
identified through the kindness of Dr. Gray, and Mr. Saville Kent 
of the British Museum. 
Phymactis. 
*P. sanctae helense, Mine. Ed.— A dark-brown leather-like sub- 
stance sticking to the rocks on the shore about high-water mark, 
sometimes expanded, at others closed like a hemispherical-shaped 
cushion. In the pools on the West Bocks, Lot’s Wife Ponds, and 
elsewhere on the coast, several other species of sea anemones exist 
and exhibit their lovely purple and white tints, though only to disap- 
pear the moment they are touched. It is to be hoped that drawings 
of them, which would he both interesting and valuable, may be made 
by some future visitor at the Island. 
Bugula, Oken. 
*B. neritina. A brown, fine silk-like coralline, of wide 
distribution. At St. Helena it is found entirely covering pieces of 
wreck or timber that have been floating about in the set and then 
washed ashore. 
Antipatlies, Pall. 
*A. pinnatifida, Mine. Ed.— The Sea-tree of St. Helena, 
