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ST. HELENA. 
and been washed on shore ; if this is the case, it cannot properly 
take a place amongst the shells of the Island. 
Fam. Nassidce. 
Cassidea, Bruguiere. 
*C. testiculus, Linn. 
Nassa, Lam. 
*N. incrassata, Strom, var. — A very beautiful little white and 
brown shell, about a quarter of an inch in length, found amongst 
the sand in the pools on the West Bocks, but not alive. It is 
a British species. 
Columbella, Lam. 
*C. cribraria, Lam. (H. and A. Adams).— A beautifully-marked, 
smooth, brown and white shell, about one-third of an inch in length; 
found under similar circumstances as the above. 
Cominella, Gray. 
*0. lugubris, C. B. Adams. — A small shell, not unlike the last 
in appearance, but having an irregular surface ; found under similar 
circumstances. 
Fam. Muricidce. 
Triton, Lam. 
*T. variegatus, Lam. — A large conch, about ten or eleven inches 
in length ; rarely seen. I obtained two living specimens, which 
came ashore at Lemon Valley. 
*T. olearium, Linn. — A large yellowish-brown shell, about three 
inches long; found on the Windward Coast, but rarely, and not 
living. 
Banella, Lam. 
*R. cselata, Broderip. — A large yellowish-brown shell, about 
two inches long, picked up in a dead state on the Windward Coast. 
It occurs at Panama. 
Murex, Linn. 
*M. n. sp. — An irregular rough-shaped shell, about three-fourths 
of an inch in length, found alive in considerable numbers adhering 
to the rocks around the coast at high-water mark. 
