Asclerocheilus acirratus (Hartman, 1966) (source of synonymy)
Asclerocheilus ashworthi Blake, 1981 (original description)
Asclerocheilus nigrocirrus Hartman, 1978 accepted as Oligobregma collare (Levenstein, 1975) (source of synonymy)
Asclerocheilus tropicus Blake, 1981 (original description)
Eumenia oculata Ehlers, 1901 accepted as Hyboscolex oculatus (Ehlers, 1901) (new combination reference)
Hyboscolex equatorialis Blake, 1981 (original description)
Hyboscolex oculatus (Ehlers, 1901) (new combination reference)
Lipobranchus [auct.] accepted as Lipobranchius Cunningham & Ramage, 1888 (additional source)
Oligobregma collare (Levenstein, 1975) (new combination reference)
Oligobregma hartmanae Blake, 1981 accepted as Pseudoscalibregma hartmanae (Blake, 1981) (original description)
Oligobregma notiale Blake, 1981 (original description)
Proscalibregma Hartman, 1967 (status source)
Proscalibregma linea Hartman, 1967 (status source)
Pseudoscalibregma bransfieldium (Hartman, 1967) (basis of record)
Pseudoscalibregma collaris Levenstein, 1975 accepted as Oligobregma collare (Levenstein, 1975) (new combination reference)
Pseudoscalibregma usarpium Blake, 1981 (original description)
Scalibregmatidae Malmgren, 1867 (identification resource)
Scalibregmides peruanus Blake, 1981 (original description)
Sclerocheilus acirratus Hartman, 1966 accepted as Asclerocheilus acirratus (Hartman, 1966) (source of synonymy)
Sclerocheilus oculatus (Ehlers, 1901) accepted as Hyboscolex oculatus (Ehlers, 1901) (new combination reference)

Nontype USNM 46841, geounit Weddell Sea, identified as Oligobregma collare (Levenstein, 1975)
Nontype USNM 46842, geounit Weddell Sea, identified as Oligobregma collare (Levenstein, 1975)
Nontype USNM 46843, geounit Weddell Sea, identified as Oligobregma collare (Levenstein, 1975)
Nontype USNM 46844, geounit Weddell Sea, identified as Oligobregma collare (Levenstein, 1975)
Holotype USNM 46976, geounit Weddell Sea, identified as Oligobregma hartmanae Blake, 1981
Nontype USNM 56653, geounit Drake Passage, identified as Oligobregma collare (Levenstein, 1975)
Paratype USNM 58965, geounit Antarctic Peninsula, identified as Oligobregma notiale Blake, 1981
Paratype USNM 58966, geounit Weddell Sea, identified as Oligobregma notiale Blake, 1981
Paratype USNM 58967, geounit Budd Coast, identified as Oligobregma notiale Blake, 1981
Holotype USNM 60569, geounit South Shetland Islands, identified as Asclerocheilus ashworthi Blake, 1981
Holotype USNM 60571, geounit Ecuadorean Exclusive Economic Zone, identified as Hyboscolex equatorialis Blake, 1981
Paratype USNM 60572, geounit Ecuadorean Exclusive Economic Zone, identified as Hyboscolex equatorialis Blake, 1981
Nontype USNM 60573, geounit Peruvian Exclusive Economic Zone, identified as Hyboscolex equatorialis Blake, 1981
Nontype USNM 60575, geounit Bellingshausen Sea, identified as Oligobregma collare (Levenstein, 1975)
Holotype USNM 60576, geounit Antarctic Peninsula, identified as Oligobregma notiale Blake, 1981
Paratype USNM 60577, geounit Antarctic Peninsula, identified as Oligobregma notiale Blake, 1981
Paratype USNM 60578, geounit Antarctic Peninsula, identified as Oligobregma notiale Blake, 1981
Paratype USNM 60579, geounit Antarctic Peninsula, identified as Oligobregma notiale Blake, 1981
Paratype USNM 60580, geounit Ross Sea, identified as Oligobregma notiale Blake, 1981
Holotype USNM 60582, geounit Peruvian Exclusive Economic Zone, identified as Scalibregmides peruanus Blake, 1981
Holotype USNM 60583, geounit Ross Sea, identified as Pseudoscalibregma usarpium Blake, 1981
Holotype USNM 65070, geounit Ecuadorean Exclusive Economic Zone, identified as Asclerocheilus tropicus Blake, 1981
Nontype USNM 67617, geounit Ross Sea, identified as Oligobregma collare (Levenstein, 1975)
Paratype USNM 69372, geounit Antipodes Islands, identified as Asclerocheilus ashworthi Blake, 1981

 Etymology

 for Asclerocheilus ashworthi Blake, 1981

This species is named for the late Dr. J.H. Ashworth of the University of Edinburgh, whose early studies on the ... [details]

 Etymology

 for Asclerocheilus tropicus Blake, 1981

Species named after its type locality, Ecuador.  [details]

 Etymology

 for Hyboscolex equatorialis Blake, 1981

Species named after its type locality, Ecuador.  [details]

 Etymology

 for Oligobregma notiale Blake, 1981

Notiale: Latin for southern. [details]

 Etymology

 for Pseudoscalibregma usarpium Blake, 1981

Usarpium: coined from the abbreviated designation of the United States Antarctic Research Program (USARP) under ... [details]

 Grammatical gender

 for Pseudoscalibregma Ashworth, 1901

The genus is neuter as the last word in the compound genus name, -bregma, is neuter (see for example the derivation ... [details]

 Spelling

 for Pseudoscalibregma bransfieldium (Hartman, 1967)

Blake (1981) correctly changed the spelling to 'bransfieldium' as Pseudoscalibregma is a neuter genus. [details]

 Taxonomy

 for 

Probably the result of a databasing lapsus. No species was described in Hartman (1978) as Asclerocheilus ... [details]

 Type locality

 for Scalibregmides peruanus Blake, 1981

Pacific Ocean, Peru, island near Pucusana, south of Callao.  [details]