Caecum armoricum, common name the DeFolin's lagoon snail, is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae. Description Distribution This species occurs in the following locations: European waters Mediterranean Sea: Greece Atlantic Ocean: Azores, Cape Verde References Hoeksema D.F. & Segers W. (1993) On the systematics and distribution of the marine gastropod Caecum armoricum de Folin, 1869 (Prosobranchia, Caecidae). Gloria Maris 31(6): 79-88. Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213 Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda. Caecidae Gastropods described in 1869 Brittany Molluscs of the Atlantic Ocean Molluscs of Macaronesia Molluscs of the Mediterranean Sea Molluscs of the Azores Gastropods of Cape Verde