No presente trabalho são apresentadas informações sobre os crustáceos decápodos coletados no Arquipélago de São Pedro e São Paulo, nos meses de junho a novembro de 1998 e janeiro de 1999, nos ambientes aquático e terrestre. Foram identificadas oito espécies: o camarão Synalpheus fritzmuelleri Coutière, 1909; a lagosta Panulirus echinatus Smith, 1869; e os caranguejos Mithraculus forceps (A. Milne Edwards, 1875), Euryozius sanguineus (Linnaeus, 1767), Xanthodius denticulatus (White, 1847), Grapsus grapsus (Linnaeus, 1758); Pachygrapsus corrugatus (von Martens, 1872) e Plagusia depressa (Fabricius, 1775).

In this paper information is given about decapod crustaceans collected on aquatic and terrestrial environments at St. Peter's and St. Paul's Archipelago (Brazil), in the months from June to November, 1998 and January, 1999. Eight species were identified: the shrimp Synalpheus fritzmuelleri Coutière, 1909; the lobster Panulirus echinatus Smith, 1869; and the crabs Mithraculus forceps (A. Milne Edwards, 1875), Euryozius sanguineus (Linnaeus, 1767), Xanthodius denticulatus (White, 1847), Grapsus grapsus (Linnaeus, 1758), Pachygrapsus corrugatus (von Martens, 1872) and Plagusia depressa (Fabricius, 1775).