Apiactis tentaculata Leloup, 1942 (original description)
Arachnactis albida Sars, 1846 (additional source)
Dactylactis armata Van Beneden, 1897 (additional source)
Engodactylactis Leloup, 1942 (original description)
Engodactylactis formosa (Gravier, 1920) (additional source)
Isovactis Leloup, 1942 (original description)
Isovactis carlgreni Leloup, 1942 (original description)
Ovactis brasiliensis Van Beneden, 1897 (additional source)
Plesiodactylactis Leloup, 1942 (original description)
Plesiodactylactis laevis (Calabresi, 1928) (additional source)
Syndactylactis chuni Carlgren, 1924 (additional source)
Syndactylactis inermis (van Beneden, 1897) (additional source)
Syndactylactis major Calabresi, 1927 (additional source)
Syndactylactis mammillata (Senna, 1907) (additional source)
Syndactylactis meridionalis Leloup, 1942 (original description)

Brazilian Exclusive Economic Zone for Apiactis tentaculata Leloup, 1942 
Southern Ocean for Syndactylactis meridionalis Leloup, 1942 

Syntype MZUS N0 C 2714, identified as Syndactylactis meridionalis Leloup, 1942
Nontype MZUS N0 C 4651, geounit Brazilian Exclusive Economic Zone, identified as Ovactis brasiliensis Van Beneden, 1897
Nontype MZUS N0 C. 1531, geounit United Kingdom Exclusive Economic Zone, identified as Arachnactis albida Sars, 1846
Holotype MZUS N0 C. 2716, identified as Isovactis carlgreni Leloup, 1942
Holotype MZUS N0 C. 4651, geounit Brazilian Exclusive Economic Zone, identified as Apiactis tentaculata Leloup, 1942