The types of Recent and certain fossil opisthobranch molluscs in the Muséum national d'Histoire naturelle, Paris

Three hundred and fifty seven lots of Recent and certain fossil opisthobranch mollusc type-specimens deposited in the Laboratoire des Invertébrés Marins et Malacogie of the Muséum national d'Histoire naturelle (MNHN) are catalogued by original binomen and arranged alphabetically within families. Most of the fossil type specimens are housed in the Laboratoire de Paléontologie, and therefore are not included in this catalogue. The essential bibliographical, geographical and taxonomic information is provided for each taxon.