Two new species of the muricid genus Subpterynotus Olsson and Harbison, 1953 are named from the Neogene fossil beds of southern Florida. These include Subpterynotus gabbi n. sp. from the Early Pleistocene (Gelasian Age) Fort Denaud Member of the Caloosahatchee Formation, and S. feliciae n. sp. from the Late Pliocene (Piacenzian Age) Pinecrest Member of the Tamiami Formation. Both new species had previously been incorrectly assigned to the Langhian Miocene taxon S. textilis (Gabb, 1872) from the Baitoa Formation of the Dominican Republic. Another Floridian species, S. miamiensis Petuch, 1994 from the late Piacenzian Fruitville Member of the Tamiami Formation, is redescribed and compared to S. gabbi, and S. feliciae.
