retropinnatus, Nettophichthys Holt [E. W. L.] 1891:123 [Scientific Proceedings of the Royal Dublin Society (N. S.) v. 7 (pt 2); ref. 2195] Off Ireland. Holotype: NMI 64.1896. •Synonym of Synaphobranchus kaupii Johnson 1862 [often as kaupi] -- (Blache et al. 1973:252 [ref. 7185], Okamura & Machida 1987:107 [ref. 22279], Robins & Robins 1989:221 [ref. 13287], Smith 1990:198 [ref. 13616]). Current status: Synonym of Synaphobranchus kaupii Johnson 1862. Synaphobranchidae: Synaphobranchinae. Habitat: marine.