The genera Megalomphalus and Macromphalina (Mollusca, Caenogastropoda, Vanikoridae) in the Caribbean area, with the description of thirteen new species

Twenty-three species and some dubious forms of small vanikorids from the Caribbean region have been studied. Seven of these species belong to the genus Megalomphalus, six of which were previously known (M. pilsbryi, M. oxychone, M. troudei, M. lamellosus, M. millerae, and M. caro), and one is described as new. In addition, some dubious forms close to M. pilsbryi are also studied. A neotype for M. oxychone and a lectotype of M. lamellosus are designated. Sixteen of the species studied are considered belonging to the genus Macromphalina, two were previously known (M. floridana and M. palmalitoris), twelve are described as new, and the other two remain undescribed pending additional material. Two tables summarizing the more important differential features of the protoconch and teleoconch of all these species are provided, and some comments on their range of distribution are given