Chirostylidae Ortmann, 1892

Gastroptychus formosus (Filhol, 1884) —CNI A. Milne-Edwards & Bouvier (1900, as Ptychogaster formosus); 946–1786 m—CVI González et al. (2017b); 525–630 m—Benthic, 699–1786 m. AAWD.

Uroptychus concolor (A. Milne-Edwards & Bouvier, 1894) —CNI Bouvier (1940, as U. nitidus concolor); 495– 1968 m—CVI A. Milne-Edwards & Bouvier (1900, as Diptychus nitidus concolor); 495–618 m—Benthic. EACT.

Uroptychus rubrovittatus (A. Milne-Edwards, 1881) —CNI Bouvier (1940); 300–1410 m—Benthic. EACT.