Amblyosyllis granosa Ehlers, 1897 (additional source)
Amblyosyllis infuscata Ehlers, 1901 accepted as Brachysyllis infuscata (Ehlers, 1901) (additional source)
Ammotrypane appendiculata (Grube, 1859) accepted as Ophelia appendiculata Grube, 1859 (new combination reference)
Ammotrypane aulopyge Ehlers, 1897 accepted as Ammotrypane syringopyge Ehlers, 1901 accepted as Ophelina syringopyge (Ehlers, 1901) (source of synonymy)
Ammotrypane delapidans (Kinberg, 1866) accepted as Ophelina delapidans (Kinberg, 1866) (new combination reference)
Ammotrypane scaphigera Ehlers, 1900 accepted as Ophelina scaphigera (Ehlers, 1900) (additional source)
Ammotrypane syringopyge Ehlers, 1901 accepted as Ophelina syringopyge (Ehlers, 1901) (original description)
Ampharete patagonica Kinberg, 1866 accepted as Anobothrus patagonicus (Kinberg, 1866) (additional source)
Amphitrite chloraema (Schmarda, 1861) (additional source)
Amphitrite kerguelensis McIntosh, 1876 (additional source)
Amphitrite variabilis (Risso, 1826) (additional source)
Aphrodite echidna Quatrefages, 1866 accepted as Aphrodita echidna Quatrefages, 1866 (additional source)
Aracoda caerulea Schmarda, 1861 accepted as Arabella iricolor caerulea (Schmarda, 1861) (additional source)
Aracoda tenuis Ehlers, 1900 accepted as Drilonereis tenuis (Ehlers, 1900) (additional source)
Archidice patagonica Kinberg, 1866 accepted as Cirratulus patagonicus (Kinberg, 1866) (additional source)
Arenicola assimilis Ehlers, 1897 accepted as Abarenicola assimilis (Ehlers, 1897) (additional source)
Arenicola marina (Linnaeus, 1758) (additional source)
Arenicola pusilla Quatrefages, 1866 accepted as Abarenicola pusilla (Quatrefages, 1866) (additional source)
Aricia cochleata Ehlers, 1900 accepted as Leodamas cochleatus (Ehlers, 1900) (redescription)
Aricia michaelseni Ehlers, 1897 accepted as Phylo felix Kinberg, 1866 (additional source)
Aricia ohlini Ehlers, 1900 accepted as Leodamas cirratus (Ehlers, 1897) (redescription)
Aricia tribulosa Ehlers, 1897 accepted as Leodamas tribulosus (Ehlers, 1897) (additional source)
Artacama proboscidea Malmgren, 1866 (additional source)
Aryandes forficata Kinberg, 1866 (additional source)
Aryandes gracilis Kinberg, 1866 (additional source)
Audouinia filigera (Delle Chiaje, 1828) accepted as Cirriformia filigera (Delle Chiaje, 1828) (additional source)
Audouinia polytricha (Schmarda, 1861) accepted as Timarete polytricha (Schmarda, 1861) (additional source)
Autolytus gibber Ehlers, 1897 accepted as Epigamia maclearanus (McIntosh, 1885) (additional source)
Autolytus simplex Ehlers, 1900 (additional source)
Brada mammillata Grube, 1877 accepted as Bradabyssa mammillata (Grube, 1877) (additional source)
Capitella capitata (Fabricius, 1780) (additional source)
Chaetopterus variopedatus (Renier, 1804) (additional source)
Clymene assimilis (McIntosh, 1885) accepted as Praxillella assimilis (McIntosh, 1885) (new combination reference)
Clymene grossa Baird, 1871 accepted as Maldanella grossa (Baird, 1871) (taxonomy source)
Clymene kerguelensis (McIntosh, 1885) accepted as Praxillella kerguelensis (McIntosh, 1885) (additional source)
Dasychone curta Ehlers, 1901 accepted as Branchiomma curtum (Ehlers, 1901) (additional source)
Demonax incertus Kinberg, 1866 accepted as Parasabella leucaspis (Kinberg, 1867) (additional source)
Demonax leucaspis Kinberg, 1867 accepted as Parasabella leucaspis (Kinberg, 1867) (additional source)
Diopatra chiliensis Quatrefages, 1866 (additional source)
Diopatra dorsalis Ehlers, 1897 accepted as Kinbergonuphis dorsalis (Ehlers, 1897) (additional source)
Dodecaceria fistulicola Ehlers, 1901 (additional source)
Enipo antarctica (Kinberg, 1858) accepted as Neopolynoe antarctica (Kinberg, 1858) (additional source)
Eteone aurantiaca Schmarda, 1861 (additional source)
Eteone crassifolia Ehlers, 1900 accepted as Eteone sculpta Ehlers, 1897 (additional source)
Eteone rubella Ehlers, 1900 accepted as Eteone sculpta Ehlers, 1897 (additional source)
Eulalia lobocephala Schmarda, 1861 (additional source)
Eulalia magalaensis Kinberg, 1866 (additional source)
Eulalia picta Kinberg, 1866 (additional source)
Eulalia strigata Ehlers, 1900 accepted as Eumida strigata (Ehlers, 1900) (additional source)
Eulalia subulifera Ehlers, 1897 accepted as Eumida subulifera (Ehlers, 1897) (additional source)
Eumenia oculata Ehlers, 1901 accepted as Hyboscolex oculatus (Ehlers, 1901) (additional source)
Eunice antennata (Savigny in Lamarck, 1818) accepted as Leodice antennata Savigny in Lamarck, 1818 (additional source)
Eunice atlantica Kinberg, 1865 (additional source)
Eunice frauenfeldi Grube, 1866 (additional source)
Eunice leucodon Ehlers, 1901 accepted as Palola leucodon (Ehlers, 1901) (additional source)
Euphrosyne armadilloides Ehlers, 1900 accepted as Euphrosine armadilloides Ehlers, 1900 (additional source)
Euphrosyne cirrata magellanica Ehlers, 1900 accepted as Euphrosine magellanica Ehlers, 1900 (additional source)
Euphrosyne notialis Ehlers, 1900 accepted as Euphrosine notialis Ehlers, 1900 (additional source)
Euphrosyne setosissima Ehlers, 1900 accepted as Euphrosine setosissima Ehlers, 1900 (additional source)
Eurythoe complanata (Pallas, 1766) (additional source)
Eurythoe paupera (Grube, 1857) accepted as Pareurythoe paupera (Grube, 1857) (additional source)
Eusyllis kerguelensis McIntosh, 1885 accepted as Pionosyllis kerguelensis (McIntosh, 1885) (additional source)
Euthelepus chiliensis [auct. misspelling] accepted as Streblosoma chilensis (McIntosh, 1885) (basis of record)
Exogone heterosetosa McIntosh, 1885 (additional source)
Fabricia alata Ehlers, 1897 accepted as Amphicorina alata (Ehlers, 1897) (additional source)
Flabelligera chilensis (Schmarda, 1861) accepted as Pherusa chilensis Schmarda, 1861 (new combination reference)
Flabelligera induta Ehlers, 1897 accepted as Flabehlersia induta (Ehlers, 1897) (additional source)
Genetyllis brevis Ehlers, 1900 accepted as Prochaetoparia brevis (Ehlers, 1900) (additional source)
Glycera americana Leidy, 1855 (additional source)
Glycera capitata Örsted, 1842 (additional source)
Glycera longissima Arwidsson, 1899 accepted as Glycera americana Leidy, 1855 (source of synonymy)
Glycera martensi [auct. misspelling] accepted as Glycera brevicirris Grube, 1870 (basis of record)
Glycera papillosa Grube, 1857 (additional source)
Glycera simplex Grube, 1857 accepted as Hemipodia simplex (Grube, 1857) (source of synonymy)
Glycerella magellanica (McIntosh, 1885) (additional source)
Glycinde armata (Kinberg, 1866) (additional source)
Goniada eximia Ehlers, 1900 accepted as Goniada gigantea (Verrill, 1885) (additional source)
Goniada uncinigera Ehlers, 1901 (original description)
Grubea rhopalophora Ehlers, 1897 accepted as Salvatoria rhopalophora (Ehlers, 1897) (additional source)
Halosydna patagonica Kinberg, 1856 (additional source)
Harmothoe hirsuta Johnson, 1897 (additional source)
Harmothoe spinosa Kinberg, 1856 (additional source)
Hemipodia simplex (Grube, 1857) (basis of record)
Hemipodus simplex (Grube, 1857) accepted as Hemipodia simplex (Grube, 1857) (new combination reference)
Hermadion ambiguum Ehlers, 1900 accepted as Harmothoe magellanica (McIntosh, 1885) (additional source)
Hermadion magalhaensi Kinberg, 1856 (additional source)
Hermadion molluscum Ehlers, 1897 accepted as Hermadion magalhaensi Kinberg, 1856 (additional source)
Lagisca vesiculosa (Grube, 1877) accepted as Harmothoe exanthema (Grube, 1856) (additional source)
Laonome antarctica Kinberg, 1866 accepted as Perkinsiana antarctica (Kinberg, 1866) (additional source)
Leaena antarctica McIntosh, 1885 (additional source)
Leanira quatrefagesi Kinberg, 1856 (additional source)
Leocrates chinensis Kinberg, 1866 (additional source)
Lepidasthenia irregularis Ehlers, 1901 accepted as Lepidasthenia virens (Blanchard in Gay, 1849) (additional source)
Lepidonotus arenosus Ehlers, 1901 (additional source)
Lepidonotus furcillatus Ehlers, 1901 (additional source)
Lepidonotus versicolor Ehlers, 1901 accepted as Thormora versicolor (Ehlers, 1901) (additional source)
Leprea streptochaeta Ehlers, 1897 accepted as Neoleprea streptochaeta (Ehlers, 1897) (additional source)
Lumbriconereis bifilaris Ehlers, 1901 accepted as Lumbrineris bifilaris Ehlers, 1901 (original description)
Lumbriconereis cingulata Ehlers, 1897 accepted as Lumbrineris cingulata Ehlers, 1897 (additional source)
Lumbriconereis magalhaensis Kinberg, 1865 accepted as Lumbrineris magalhaensis Kinberg, 1865 (additional source)

Guatemalan part of the North Pacific Ocean for Nereis acutifolia Ehlers, 1901 

 Additional information

 for Marphysa (Nauphanta) corallina (Kinberg, 1865)

Ehlers (1901) does not describe a new species. He records M. corallina (Kinberg, 1865) from Chile (Tumbes ... [details]

 Authority

 for Nereis variegata Grube, 1857

In Hartman (1959: 272) catalogue this name is inexplicably attributed to Ehlers (1901: 112), but Ehlers is there ... [details]

 Etymology

 for Aricia ohlini Ehlers, 1900

Not stated. Ehlers (1901) indicates the material was collected by the ship of the Swedish explorer Nordenskjold in ... [details]

 Etymology

 for Dodecaceria fistulicola Ehlers, 1901

A fistula is a hole or a pipe. Therefore 'fistulicola' relates to dwelling in a hole or pipe (= the worm tube) [details]

 Type locality

 for Nereis acutifolia Ehlers, 1901

Guatemala and Costa Rica West coasts, Central America, Pacific Ocean [details]