Amphitrite bombyx Dalyell, 1853 accepted as Branchiomma bombyx (Dalyell, 1853) (original description)
Amphitrite floscula Dalyell, 1853 accepted as Myxicola infundibulum (Montagu, 1808) (original description)
Amphitrite luna Dalyell, 1853 (original description)
Aphrodita arcta Dalyell, 1853 accepted as Sthenelais limicola (Ehlers, 1864) (original description)
Aphrodita cirrosa Dalyell, 1853 accepted as Alentia gelatinosa (M. Sars, 1835) (original description)
Aphrodita varians Dalyell, 1853 accepted as Harmothoe imbricata (Linnaeus, 1767) (original description)
Aphrodita velox Dalyell, 1853 accepted as Scalisetosus communis (Delle Chiaje, 1851) (original description)
Clymene borealis Dalyell, 1853 (original description)
Eolis conspersa Dalyell, 1853 accepted as Cuthona foliata (Forbes & Goodsir, 1839) accepted as Trinchesia foliata (Forbes & Goodsir, 1839) (original description)
Eolis deaurata Dalyell, 1853 accepted as Cuthona caerulea (Montagu, 1804) accepted as Trinchesia caerulea (Montagu, 1804) (original description)
Eolis plumata Dalyell, 1853 accepted as Aeolidia papillosa (Linnaeus, 1761) (original description)
Eolis sanguifera Dalyell, 1853 accepted as Cuthona gymnota (Couthouy, 1838) accepted as Catriona gymnota (Couthouy, 1838) (original description)
Eolis ventilabrum Dalyell, 1853 accepted as Tenellia adspersa (von Nordmann, 1845) (original description)
Gordius anguis Dalyell, 1853 accepted as Tubulanus superbus (Kölliker, 1845) (original description)
Gordius fragilis Dalyell, 1853 accepted as Cerebratulus marginatus [Renier], [1804] (original description)
Gordius gracilis Dalyell, 1853 accepted as Procephalothrix filiformis (Johnston, 1828) accepted as Cephalothrix filiformis (Johnston, 1828) (original description)
Nephthys hirsuta Dalyell, 1853 accepted as Nephtys caeca (Fabricius, 1780) (original description)
Nereis (Nephtys) Cuvier, 1817 accepted as Nephtys Cuvier, 1817 (basis of record)
Nereis (Nephtys) hirsuta Dalyell, 1853 (original description)
Nereis (Nephtys) lineata Dalyell, 1853 accepted as Nephtys caeca (Fabricius, 1780) (original description)
Nereis aries Dalyell, 1853 accepted as Scolelepis vulgaris (Johnston, 1827) (original description)
Nereis bullata Dalyell, 1853 accepted as Sphaerodorum gracilis (Rathke, 1843) (original description)
Nereis contorta Dalyell, 1853 (original description)
Nereis ellipsis Dalyell, 1853 accepted as Eulalia ellipsis (Dalyell, 1853) (original description)
Nereis foliata Dalyell, 1853 accepted as Scolelepis squamata (Müller, 1806) represented as Scolelepis (Scolelepis) squamata (O.F. Muller, 1806) (original description)
Nereis monoceros Dalyell, 1853 (original description)
Nereis parva Dalyell, 1853 accepted as Spio parva (Dalyell, 1853) (original description)
Nereis pectinata Dalyell, 1853 (original description)
Nereis phasma Dalyell, 1853 accepted as Tomopteris helgolandica Greeff, 1879 represented as Tomopteris (Johnstonella) helgolandica (Greeff, 1879) (original description)
Nereis punctata Dalyell, 1853 (original description)
Nereis remex Dalyell, 1853 accepted as Phyllodoce lamelligera (Gmelin in Linnaeus, 1788) (original description)
Nereis teres Dalyell, 1853 (original description)
Nerine foliata Dalyell, 1853 accepted as Scolelepis foliosa (Audouin & Milne Edwards, 1833) represented as Scolelepis (Scolelepis) foliosa (Audouin & Milne Edwards, 1833) (original description)
Sabella alveolaria Dalyell, 1853 accepted as Sabellaria alveolata (Linnaeus, 1767) (original description)
Siphonostoma gelatinosa Dalyell, 1853 accepted as Flabelligera affinis M. Sars, 1829 (original description)
Terebella figulus Dalyell, 1853 accepted as Neoamphitrite figulus (Dalyell, 1853) (original description)
Terebella littoralis Dalyell, 1853 [non Linnaean as 'littoralis seu arenaria'] accepted as Lanice conchilega (Pallas, 1766) (original description)
Terebella maculata Dalyell, 1853 accepted as Pista maculata (Dalyell, 1853) (original description)
Terebella ostreae Dalyell, 1853 accepted as Dodecaceria concharum Örsted, 1843 (original description)
Terebella pecten Dalyell, 1853 accepted as Terebellides stroemii Sars, 1835 (original description)
Terebella textrix Dalyell, 1853 accepted as Nicolea zostericola Örsted, 1844 (original description)
Terebella tuberculata Dalyell, 1853 accepted as Eupolymnia nebulosa (Montagu, 1819) (original description)