heterotrema, Bdellostoma Müller [J.] 1836:79 [15], Pl. 1, Pl. 3 (figs. 1-7), Pl. 6, et al. [Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1834; ref. 3060] Table Bay, Cape of Good Hope, South Africa. Holotype (unique): ZMB 31647. Type catalog: Paepke & Schmidt 1988:158 [ref. 21041] as syntypes. Pl. 1, Pl. 3 (figs. 1-7), Pl. 6, Pl. 7 (figs. 1-5), Pl. 8, Pl. 9 (fig. 4). On p. 15 of separate, perhaps published in 1835. The combination Bdellostoma forsteri var. heterotrema was treated incorrectly as an original description in Müller 1838 by Paepke & Schmidt 1988:158 [ref. 21041]. •Synonym of Eptatretus hexatrema (Müller 1836) -- (Paepke & Schmidt 1988:158 [ref. 21041], Mincarone 2022:382 [ref. 39656]). Current status: Synonym of Eptatretus hexatrema (Müller 1836). Myxinidae: Eptatretinae. Habitat: marine.