Alibrotus H. Milne Edwards, 1840 accepted as Pseudalibrotus Della Valle, 1893 accepted as Onisimus Boeck, 1871 (additional source)
Anonyx edwardsii Krøyer, 1846 accepted as Onisimus edwardsii (Krøyer, 1846) (basis of record)
Anonyx edwardsii Krøyer, 1846 accepted as Onisimus edwardsii (Krøyer, 1846) (source of synonymy)
Anonyx litoralis Krøyer, 1845 accepted as Onisimus litoralis (Krøyer, 1845) (basis of record)
Anonyx litoralis Krøyer, 1845 accepted as Onisimus litoralis (Krøyer, 1845) (source of synonymy)
Boeckosimus J.L. Barnard, 1969 accepted as Onisimus Boeck, 1871 (additional source)
Boeckosimus edwardsii (Krøyer, 1846) accepted as Onisimus edwardsii (Krøyer, 1846) (additional source)
Boeckosimus krassini (Gurjanova, 1951) accepted as Onisimus krassini Gurjanova, 1951 accepted as Onisimus barentsi (Stebbing, 1894) (source of synonymy)
Boeckosimus leucopis (G.O. Sars, 1879) accepted as Onisimus leucopis (G.O. Sars, 1879) (source of synonymy)
Boeckosimus normani (G.O. Sars, 1891) accepted as Onisimus normani G.O. Sars, 1891 (new combination reference)
Boeckosimus sextonae (Chevreux, 1926) accepted as Onisimus sextonae (Chevreux, 1926) (additional source)
Boeckosimus sibiricus (Brüggen, 1909) accepted as Onisimus sibiricus Brüggen, 1909 (new combination reference)
Boeckosimus simus (Gurjanova, 1962) accepted as Onisimus simus Gurjanova, 1962 (new combination reference)
Boeckosimus turgidus (G.O. Sars, 1879) accepted as Onisimus turgidus (G.O. Sars, 1879) (new combination reference)
Onesimus Boeck, 1876 accepted as Onisimus Boeck, 1871 (status source)
Onisimus Boeck, 1871 (additional source)
Onisimus abyssi Oldevig, 1959 (additional source)
Onisimus abyssicola Stuxberg, 1880 (status source)
Onisimus affinis Hansen, 1887 (source of synonymy)
Onisimus barentsi (Stebbing, 1894) (additional source)
Onisimus botkini Birula, 1897 (new combination reference)
Onisimus brevicaudatus Hansen, 1887 (source of synonymy)
Onisimus caricus Hansen, 1887 (source of synonymy)
Onisimus caspius (G.O. Sars, 1896) (basis of record)
Onisimus crassini Gorbunov, 1946 (status source)
Onisimus derjugini Gurjanova, 1929 (source of synonymy)
Onisimus edwardsii (Krøyer, 1846) (additional source)
Onisimus glacialis (G.O. Sars, 1900) (new combination reference)
Onisimus leucopis (G.O. Sars, 1879) (additional source)
Onisimus litoralis (Krøyer, 1845) (additional source)
Onisimus normani G.O. Sars, 1891 (additional source)
Onisimus platyceras (G.O. Sars, 1896) (new combination reference)
Onisimus plautus (Krøyer, 1845) (new combination reference)
Onisimus punctatus (Spence Bate, 1863) (additional source)
Onisimus sextoni (Chevreux, 1926) accepted as Onisimus sextonae (Chevreux, 1926) (additional source)
Onisimus turgidus (G.O. Sars, 1879) (additional source)
Onisimus vorax Stuxberg, 1880 (status source)
Onisimus zebra Stuxberg, 1880 (status source)
Onisimus zenkevitchi (Mednikov, 1960) (additional source)
Paronesimus Pirlot, 1933 accepted as Onisimus Boeck, 1871 (additional source)
Paronesimus barentsi Stebbing, 1894 accepted as Onisimus barentsi (Stebbing, 1894) (redescription)
Pseudalibrotus Della Valle, 1893 accepted as Onisimus Boeck, 1871 (source of synonymy)
Pseudalibrotus litoralis (Krøyer, 1845) accepted as Onisimus litoralis (Krøyer, 1845) (basis of record)
Pseudalibrotus litoralis (Krøyer, 1845) accepted as Onisimus litoralis (Krøyer, 1845) (source of synonymy)

 Ecology

 for Onisimus turgidus (G.O. Sars, 1879)

O. normani and O. turgidus are commensals with sea anemones (Vader 1967, 1970, 1984). A good summary of their ... [details]

 Synonymy

 for Onisimus Boeck, 1871

Onisimus is an unfortunate misprint in Boeck (1871). Boeck (1876) makes it clear that the genus is named for the ... [details]

 Taxonomic remark

 for Onesimus Boeck, 1876

Onisimus is an unfortunate misprint in Boeck (1871). Boeck (1876) makes it clear that the genus is named for the ... [details]