8 
large and in great request, have been brought 
from.the Gambia, and Senegal*. The rare 
reverse Achatina is found in this country, but 
its precise locality is not ascertained. _ 
Or the shells from the Cape de Verde Islands, 
as well as from.the cluster of the Canaries, . 
we know but little: the sea-shells are common 
to both, and also to Madeira; from the latter 
we have lately received some rare land and. 
fresh-water shells. Others of equal rarity, no 
doubt, will be found there, and also at Cape 
Verd. 
At Goree, and all along the African coast, 
varieties of shells occur, which are beaten to 
fragments by the surf.. At low water, after 
* Snail shells. The animals constitute an article of food, and 
are much, used in soup in the various ports of the Mediterra- 
nean, where I have often seen them, boiled in their shells, 
and served up with rice, 
