Hermadion fuligineum Baird, 1865, H. molluscum Ehlers, 1897, and H. ambiguum Ehlers, 1901 a have already been revised by Barnich et al. (2006). Due to the presence of cephalic peaks, a neuropodial supraacicular process and bi- and unidentate neurochaetae, these species were referred to Harmothoe. Hermadion fuligineum becoming Harmothoe fulgineum (Baird, 1865), and the other as junior synonyms of Harmothoe magellanica (McIntosh, 1885).
Unfortunately the type material of Hermadion ornatus Hartman, 1967 and H. africanus Hartman, 1974 deposited in the Los Angeles County Museum (LACM) were not available for study, as the collections are currently being tranferred to a new storage. Hartman (1967) described H. ornatus with cephalic peaks, ventrally inserted lateral antennae, and distinctly bidentate neurochaetae. According to Hartman (1974) only the prostomial characters of H. africanus agree with Harmothoe while the neurochaetae seem to be unidentate. However, Wehe (2006) had the opportunity to study the syntypes of H. africanus together with some additional material (SMF 13611, 13612, and 13614 also reexamined by us) and he found some neurochaetae to be minutely bidentate and neuropodia to have a supra-acicular process. These species are referred here to Harmothoe ornatus (Hartman, 1967) n. comb. and Harmothoe africanus (Hartman, 1974) n. comb., respectively.
Hermadion Kinberg, 1856 Hermadionella Uschakov, 1982
Harmothoe (Eunoa) truncata Moore, 1902 Hermadionella truncata (Moore, 1902) Uschakov (1982) (= Hermadion truncata (Moore, 1902) cf.
Moore (1908)
Hermadion nipponicus Imajima & Hartman, Hermadionella nipponicus (Imajima & Uschakov (1982) 1964 Hartman, 1964)
Neopolynoe Loshamn, 1981
Polynoe (Eunoa) acanellae Verrill, 1881 Neopolynoe acanellae (Verrill, 1881) n. this study (= Harmothoe (Hermadion) acanellae comb.
(Verrill, 1881) cf. Pettibone 1963)
Subadyte Pettibone, 1969
Polynoe pellucida Ehlers, 1864 Subadyte pellucida (Ehlers, 1864) Fauvel (1923), Pettibone (1969) (= Hermadion pellucidum (Ehlers, 1864) cf.
Saint-Joseph 1888)
Hermadion fragile Claparède, 1868 Subadyte pellucida (Ehlers, 1864) Fauvel (1923), Pettibone (1969)
Indeterminable or invalid species