Diagnostic patterns and figures allow correct identifications of those crabs; also coloration, ecology and their distribution are given. The following crabs are reported for Colombia: Gecarcinus (Gecarcinus) ruricola (Linnaeus, 1758), G. (G.) lateralis lateralis (Freminville, 1835), G. (G.) lateralis quadratus Saussure, 1835, G. (lohngarthia) malpilensis Faxon, 1893, Cardisoma guanhumi Latreille, 1825, C. crassum Smith, 1870, Ucides cordatus cordatus (Linnaeus, 1763) and U. cordatus occidentalis. (Ortman, 1898).
