42 
mon or right Whales, which are caught in 
these seas, have their jaws frequently covered 
with curious barnacles. Numerous chitons and 
limpets are found adhering to the rocks on va- 
rious parts of the coast. The exports of Mo- 
zambique are at present almost exclusively 
confined to ivory, gum, gold-dust, ostrich fea- 
thers, and wax; but it may be expected that 
shells and minerals will form a part, when 
some of our enterprising countrymen in this 
settlement shall devote a few hours, by way of 
recreation, to the collecting subjects of natural 
history. 
THE group ofislands called Sychelles, produce 
an imemense quantity of shells of different spe- 
cies, but none very rare or valuable. 
- Tus Comora Islands, particularly Johanna, 
abound with common cowries, of which I have 
