GREEN HELMET-SHELL. 
Kn ORR, who originally figured this hand- 
some shell, tells us that it is -one of those 
which are denommated Helmets ; though, at' 
the same time, that it is of a species -a little, 
anomalous. It has, he observes, in some 
r^speds, the figure of the G reat Sea Snail. It 
is very large ; of a rich or bright green co- 
lour, with Vhfte rays ; and has a thick, heavy - 
shell, adorned with strong ridges above the 
contours or windings, and interiorly of the 
colour of mother-of-pearl. This shell, he 
adds, comes from the Islands 'of the Antilles ; 
where it is formed into goblets or drinking- 
vessels, in the same manner as those shells 
which they call Carenes, or Ship Keels. 
To this, which is the whole of Knorr's 
description, it may not be improper to sub- 
join what is said by Dacosta respeding the 
family in general of which these shells form a 
pait. 
The 
