3 links
Crustacea.Net
crustacea.net
Provides an interactive information retrieval system for the world crustaceans.
Land Crabs of the Seychelles islands
geocities.com
This site contains information about the various coastal and terrestrial crabs of the Seychelles islands.
Nonindigenous Crustaceans
nas.er.usgs.gov
Describes common methods of introduction, with links to descriptions of species and US distribution maps.