Ambo americana Monro, 1933 accepted as Timarete perbranchiata (Chamberlin, 1918) (original description)
Amphitritides bruneocomata (Ehlers, 1887) (additional source)
Audouinia luxuriosa (Moore, 1904) accepted as Timarete luxuriosa (Moore, 1904) (new combination reference)
Audouinia polytricha (Schmarda, 1861) accepted as Timarete polytricha (Schmarda, 1861) (additional source)
Audouinia tortugaensis (Augener, 1922) accepted as Cirriformia tortugaensis (Augener, 1922) (source of synonymy)
Bispira rugosa monterea (Chamberlin, 1919) accepted as Eudistylia polymorpha (Johnson, 1901) (new combination reference)
Branchiomma mushaensis Gravier, 1906 accepted as Acromegalomma mushaense (Gravier, 1906) (additional source)
Cirratulus dollfusi Fauvel, 1928 accepted as Fauvelicirratulus dollfusi (Fauvel, 1928) (source of synonymy)
Clymene (Euclymene) rubrocincta (Johnson, 1901) accepted as Axiothella rubrocincta (Johnson, 1901) (new combination reference)
Crosslandiella Monro, 1933 accepted as Pseudovermilia Bush, 1907 (original description)
Crosslandiella multispinosa Monro, 1933 accepted as Pseudovermilia multispinosa (Monro, 1933) (original description)
Crosslandiella multispinosa inarmata Monro, 1933 accepted as Pseudovermilia multispinosa (Monro, 1933) (original description)
Dasybranchus caducus lumbricoides Grube, 1878 accepted as Dasybranchus lumbricoides Grube, 1878 (status source)
Demonax leucaspis Kinberg, 1867 accepted as Parasabella leucaspis (Kinberg, 1867) (additional source)
Flabelligera affinis M. Sars, 1829 (additional source)
Haploscoloplos panamensis Monro, 1933 accepted as Leitoscoloplos panamensis (Monro, 1933) (original description)
Hydroides crucigera Mörch, 1863 (additional source)
Hydroides exaltata (Marenzeller, 1884) (additional source)
Hydroides inermis Monro, 1933 (original description)
Hydroides lunulifera (Claparède, 1870) accepted as Hydroides dirampha Mörch, 1863 (additional source)
Hydroides uncinata (Phillipi, 1844) (additional source)
Hypsicomus phaeotaenia (Schmarda, 1861) accepted as Notaulax phaeotaenia (Schmarda, 1861) (additional source)
Idanthyrsus armatus Kinberg, 1866 accepted as Idanthyrsus macropaleus (Schmarda, 1861) (additional source)
Idanthyrsus pennatus (Peters, 1854) (additional source)
Lanicides taboguillae (Chamberlin, 1919) (new combination reference)
Laonice japonica (Moore, 1907) (new combination reference)
Leptochaetopterus Berkeley, 1927 accepted as Spiochaetopterus M Sars, 1856 (source of synonymy)
Leptochaetopterus pottsi Berkeley, 1927 accepted as Spiochaetopterus costarum (Claparède, 1869) (source of synonymy)
Loimia medusa (Savigny, 1822) (additional source)
Loimia medusa annulifilis (Grube, 1872) accepted as Loimia annulifilis (Grube, 1872) (additional source)
Magelona pacifica Monro, 1933 (original description)
Maldane gorgonensis Monro, 1933 (original description)
Mesochaetopterus alipes Monro, 1928 (redescription)
Nicolea galapagensis Chamberlin, 1919 accepted as Lanicides taboguillae (Chamberlin, 1919) (source of synonymy)
Nicolea taboguillae Chamberlin, 1919 accepted as Lanicides taboguillae (Chamberlin, 1919) (source of synonymy)
Pista alata Moore, 1909 (new combination reference)
Pista elongata Moore, 1909 (additional source)
Pista herpini Fauvel, 1928 (additional source)
Polycirrus pallidus (Claparède, 1864) (additional source)
Polymnia nebulosa (Montagu, 1819) accepted as Eupolymnia nebulosa (Montagu, 1819) (additional source)
Polymnia regnans (Chamberlin, 1919) accepted as Eupolymnia regnans Chamberlin, 1919 (new combination reference)
Pomatostegus stellatus (Abildgaard, 1789) (additional source)
Potamilla brevibranchiata (Moore, 1905) accepted as Pseudopotamilla occelata Moore, 1905 (new combination reference)
Protula tubularia balboensis Monro, 1933 accepted as Protula balboensis Monro, 1933 (original description)
Sabella bipunctata Baird, 1865 accepted as Bispira melanostigma (Schmarda, 1861) (additional source)
Sabellaria (Phragmatopoma) virgini (Kinberg, 1866) accepted as Phragmatopoma virgini Kinberg, 1866 (new combination reference)
Sabellaria pectinata moorei Monro, 1933 accepted as Sabellaria moorei Monro, 1933 (original description)
Sabellastarte indica (Savigny, 1822) accepted as Sabellastarte spectabilis (Grube, 1878) (additional source)
Salmacina dysteri tribranchiata (Moore, 1923) accepted as Salmacina tribranchiata (Moore, 1923) (new combination reference)
Serpula (Crucigera) websteri (Benedict, 1887) accepted as Crucigera websteri Benedict, 1887 (additional source)
Spionides japonicus Moore, 1907 accepted as Laonice japonica (Moore, 1907) (new combination reference)
Spirobranchus contierei [misspelling of 'coutierei'] (basis of record)
Spirobranchus giganteus (Pallas, 1766) (additional source)
Streblosoma crassibranchiata [auctt. misspelling] accepted as Streblosoma crassibranchia Treadwell, 1914 (basis of record)
Streblosoma verrilli Treadwell, 1911 accepted as Thelepus verrilli (Treadwell, 1911) (additional source)
Stylarioides capensis americana Monro, 1928 accepted as Trophoniella americana (Monro, 1928) (additional source)
Stylarioides papillata (Johnson, 1901) accepted as Pherusa papillata (Johnson, 1901) (new combination reference)
Syllis fuscosuturata (Augener, 1922) accepted as Branchiosyllis exilis (Gravier, 1900) (additional source)
Telepsavus costarum Claparède, 1869 accepted as Spiochaetopterus costarum (Claparède, 1869) (additional source)
Terebella bruneocomata Ehlers, 1887 accepted as Amphitritides bruneocomata (Ehlers, 1887) (additional source)
Terebella gorgonae Monro, 1933 (original description)
Terebella panamena Chamberlin, 1919 (source of synonymy)
Terebellides eurystethus Chamberlin, 1919 (source of synonymy)
Terebellides stroemi [auctt. misspelling] accepted as Terebellides stroemii Sars, 1835 (additional source)
Timarete dollfusi (Fauvel, 1928) accepted as Fauvelicirratulus dollfusi (Fauvel, 1928) (additional source)
Vermiliopsis acanthophora Augener, 1914 accepted as Metavermilia acanthophora (Augener, 1914) (additional source)
Vermiliopsis glandigerus Gravier, 1906 [original spelling] accepted as Vermiliopsis glandigera Gravier, 1906 (additional source)

Coiba Island for Pista alata Moore, 1909 
Galapagos Exclusive Economic Zone for Pista alata Moore, 1909 
Gorgona Island for Pista herpini Fauvel, 1928 

Syntype NHMUK 1933.7.10.286-290, geounit Santa Cruz Island, Galapagos, identified as Terebella gorgonae Monro, 1933
Syntype NHMUK 1933.7.10.291-293, geounit Gorgona Island, identified as Terebella gorgonae Monro, 1933
Syntype NHMUK 1933.7.10.63-64, geounit Taboga Island, identified as Haploscoloplos panamensis Monro, 1933

 Depth range

 for Dasybranchus caducus lumbricoides Grube, 1878

Intertidal to low water.  [details]

 Depth range

 for Haploscoloplos panamensis Monro, 1933

11-22 m. [details]

 Depth range

 for Terebella gorgonae Monro, 1933

Intertidal to subtidal. [details]

 Description

 for Protula tubularia balboensis Monro, 1933

Monro states that the tubes are evidently attached to the rock along their sides, not free as in Protula tubularia. ... [details]

 Distribution

 for Dasybranchus caducus lumbricoides Grube, 1878

Pacific Ocean: Indefatigable Island (Galápagos Islands, Ecuador); Gorgona Island (Colombia).  [details]

 Distribution

 for Haploscoloplos panamensis Monro, 1933

Pacific Ocean: between Taboga and Taboguilla islands (Panama). [details]

 Distribution

 for Pista herpini Fauvel, 1928

Indian Ocean: Gulf of Mannar (Pamban and Krusadai islands); Persian Gulf. Pacific Ocean: Gorgona Island (Colombia). [details]

 Distribution

 for Terebella gorgonae Monro, 1933

Pacific Ocean: Gorgona Island (Colombia); Albemarle (= Isabela) and Indefatigable (= Santa Cruz) islands ... [details]

 Environment

 for Hydroides inermis Monro, 1933

Not stated, but for H. inermis it is likely that the Latin inermis 'unarmed', is referring to the verticil spines ... [details]

 Etymology

 for Haploscoloplos panamensis Monro, 1933

Not explicitly stated, but the specific epithet panamensis refers to the type locality of the species, located in ... [details]

 Etymology

 for Terebella gorgonae Monro, 1933

Not explicitly stated in the original description, the specific epithet gorgonae refers to Gorgona Island ... [details]

 Habitat

 for Dasybranchus caducus lumbricoides Grube, 1878

Shore pools, intertidal to low water.  [details]

 Habitat

 for Haploscoloplos panamensis Monro, 1933

Soft mud, at subtidal depths. [details]

 Habitat

 for Leitoscoloplos panamensis (Monro, 1933)

On sand, fine sand, muddy sand, mud, and among mangrove roots; temperature 14.1 to 32ºC; salinity 34.2 to 35.9 psu; ... [details]

 Habitat

 for Terebella gorgonae Monro, 1933

Fine gravel in pools, and under stones, intertidal to shallow water. [details]

 Syntype

 for Haploscoloplos panamensis Monro, 1933

Syntypes deposited at the Natural History Museum, London, UK (NHMUK 1933.7.10.63-64). [details]

 Taxonomy

 for Dasybranchus lumbricoides Grube, 1878

The species was synonymised with Dasybranchus caducus (Grube, 1846) by Eisig (1887: 823-828), and this synonymy was ... [details]

 Taxonomy

 for Laonice japonica (Moore, 1907)

Monro (1933: 1047) established the new combination Laonice japonica (Moore, 1907), considering the species as valid ... [details]

 Type locality

 for Distylidia monroi Hartman, 1961

The holotype or syntypes of Distylidia monroi Hartman, 1961 are Monro's (1933) specimens from Balboa and Coiba ... [details]

 Type locality

 for Haploscoloplos panamensis Monro, 1933

Between Taboga and Taboguilla islands, Panama, Pacific Ocean (gazetteer estimate 8.80°, -79.54°). [details]

 Type locality

 for Protula tubularia balboensis Monro, 1933

Balboa, Panama, Taboga Island, Gorgona Island. Monro does not name which is the type locality [details]

 Type locality

 for Terebella gorgonae Monro, 1933

Syntypes from three localities in the Pacific Ocean: a) Gorgona Island, Panama (gazetteer estimate 2.965°, ... [details]

 Type material

 for Terebella gorgonae Monro, 1933

Syntypes from at least two of the three type localities deposited at the Natural History Museum, London, UK (NHMUK ... [details]