Leucosiidae Samouelle, 1819

Atlantolocia laevidorsalis (Miers, 1881) —CVI A. Milne-Edwards & Bouvier (1900, as Philyra laevidorsalis); littoral—Benthic, 4– 30 m. TSEA.

Ebalia affinis Miers, 1881 —CNI likely (occurs off Madeira, and from Senegal to Angola, González 2016)—CVI A. Milne-Edwards & Bouvier (1898, as E. (Phlyxia) atlantica); 60 m—Benthic, 40– 140 m. TSEA.

Ebalia deshayesi Lucas, 1846 —CNI A. Milne-Edwards & Bouvier (1900, as E. edwardsi); 280 m—Benthic, 5– 100 m. ATLM.

Ebalia edwardsii Costa, 1838 —CNI A. Milne-Edwards & Bouvier (1900, as E. algirica); 0–190 m—Benthic, 0– 100 m. ATLM.

Ebalia fragifera Miers, 1881 —CNI type-locality; depth unknown—Benthic. MAC (also in Madeira).

Ebalia nux A. Milne-Edwards, 1883 —CNI Bouvier (1922); 540–2983 m—CVI A. Milne-Edwards & Bouvier (1900); 219–875 m—Benthic, 80–2983 m. EACT.

Ebalia tuberculata Miers, 1881 —CNI Quiles et al. (2002); 40–300 m—CVI A. Milne-Edwards & Bouvier (1900); 60 m—Benthic, 12– 110 m. TSEA.

Ebalia tuberosa (Pennant, 1777) —CNI A. Milne-Edwards & Bouvier (1900, as E. tuberosa and E. tuberculata); 30–180 m—Benthic, 0– 199 m. EACT.

Ebalia tumefacta (Montagu, 1808) —CNI Quiles et al. (2002); 150–200 m—Benthic, 0– 199 m. EACT.

Ilia nucleus (Linnaeus, 1758) —CNI A. Milne-Edwards & Bouvier (1900); 162 m—CVI A. Milne-Edwards & Bouvier (1900); 60 m—Benthic, 0.5– 80 m. ATLM.

Ilia spinosa Miers, 1881 —CNI type-locality; 0–107 m—CVI Guinot & Ribeiro (1962); 8–150 m—Benthic, 5– 132 m. TSEA.

Merocryptus boletifer A. Milne-Edwards & Bouvier, 1894 —CNI Moro et al. (2014); 100–150 m—Benthic, 40– 629 m. ATLM.

Merocryptus obsoletus A. Milne-Edwards & Bouvier, 1898 —CVI type-locality; 75–122 m—Benthic, 75– 132 m. TSEA.