Gymnorhynchus Horst, 1918

(= Gymnonereis Horst, 1919, repl. name for Gymnorhynchus Horst, 1918; = Ceratocephala Malmgren, 1867 fide Hartman 1959; distinct fide Banse 1977) sibogae Horst, 1918: Off Spermonde Bank, Makassar Strait. NML 1507, 341, 1903 (= Ceratocephala sibogae fide Hartman 1959; = Gymnonereis sibogae and Ceratocephala sibogae fide Bleeker & van der Spoel 1992)