Dear David Pirinhas,
There is the book: Moluscos Marinhos da la Ilha de S. Vicente
(Arquipélago de Cabo Verde) - A. Guerreiro & F. Reiner - 2000.
Edicao: Camara Municipal de Oeiras (Portugal).
I would like to contact the Authors of the book,
but I do not know the addresses.
Regards
Flavio Mattavelli
via Serbelloni, 67
20064 - Gorgonzola - MI
Italy