Remarks: SEGONZAC (1992) reported Parasicyonis ingolfi CARGREN, 1942 from Snake Pit, Mid-Atlantic Ridge. This species was described before the discovery of hydrothermal vents. Despite of that report, there is no formal morphological description of this poorly known species from Mid-Atlantic Ridge material. At present, all other material subsequently studied from the Mid-Atlantic Ridge corresponds with the description of Maractis rimicarivora. Although Parasicyonis ingolfi was included in the first edition of the Handbook of deep-sea hydrothermal vent fauna (DESBRUYÈRES & SEGONZAC 1997), at present, we decided not to include this species until new material will be studied.