Revision of the Verrucidae (Crustacea, Cirripedia) from the Atlantic Ocean studied by Abel Gruvel (Travailleur and Talisman scientific expeditions)

The verrucids from the Atlantic Ocean studied by Gruvel are redescribed, including their appendages. Altiverruca erecta (Gruvel, 1900), A. longicarinata (Gruvel, 1900), Metaverruca imbricata (Gruvel, 1900), M. radiata (Gruvel, 1901) and M. trisulcata (Gruvel, 1900) are considered valid species. Metaverruca imbricata and M. radiata are transferred to this genus because in both the fixed scutum has a well-developed adductor ridge and an enlarged basal margin. Verruca striata Gruvel, 1900 is considered to be a synonym of Metaverruca trisulcata, and Verruca linearis Gruvel, 1900 and V. magna Gruvel, 1901 are synonyms of Metaverruca recta (Aurivillius, 1898). Metaverruca sensibilis Young, 1998 is a synonym of M. imbricata. All these species have their distributions limited to the Northern Atlantic. The samples considered as Verruca stroemia (Müller, 1776) by Gruvel from deep-water stations off the Azores (Talisman Expedition 1883) are indeed empty shells of Verruca spengleri Darwin, 1854.