Actoniscus lindahli Richardson, 1905 accepted as Armadilloniscus lindahli (Richardson, 1905) (original description)
Anthura brunnea Harger, 1873 in Verrill, Smith & Harger, 1883 accepted as Cyathura carinata (Krøyer, 1847) (source of synonymy)
Bopyriscus Richardson, 1905 accepted as Bopyrella Bonnier, 1900 (original description)
Bopyriscus calmani Richardson, 1905 accepted as Bopyrella calmani (Richardson, 1905) (original description)
Cassidisca Richardson, 1905 accepted as Cassidinidea Hansen, 1905 (original description)
Ceratothoa impressa (Say, 1818) accepted as Glossobius impressus (Say, 1818) (basis of record)
Cirolana chiltoni Richardson, 1905 accepted as Excirolana chiltoni (Richardson, 1905) (original description)
Discerceis Richardson, 1905 (original description)
Dynameniscus Richardson, 1905 (original description)
Excorallana mexicana Richardson, 1905 (original description)
Excorallana tricornis occidentalis Richardson, 1905 (original description)
Exosphaeroma faxoni Richardson, 1905 accepted as Heteruropus faxoni (Richardson, 1905) (original description)
Glyptonotus acutus Richardson, 1906 (original description)
Holophryxus alascensis Richardson, 1905 accepted as Holophryxus alaskensis Richardson, 1905 (basis of record)
Hypergnathus Richardson, 1905 accepted as Rhyscotus Budde-Lund, 1885 (original description)
Hypergnathus texensis Richardson, 1905 accepted as Rhyscotus texensis (Richardson, 1905) (original description)
Idotea fewkesi Richardson, 1905 (original description)
Iole Richardson, 1905 accepted as Ianthe Bovallius, 1881 (basis of record)
Iole Richardson, 1905 accepted as Ianthe Bovallius, 1881 (original description)
Iolella Richardson, 1905 accepted as Ianthe Bovallius, 1881 (original description)
Iolella erostrata (Richardson, 1899) accepted as Janiralata erostrata (Richardson, 1899) (new combination reference)
Iolella sarsi Richardson, 1905 accepted as Janiralata sarsi (Richardson, 1905) (original description)
Mesidotea Richardson, 1905 accepted as Saduria Adams, 1852 (original description)
Munidion parvum Richardson, 1904 (redescription)
Munna caeca Richardson, 1905 accepted as Haplomunna caeca (Richardson, 1905) (original description)
Paradynamene Richardson, 1905 accepted as Cerceis H. Milne Edwards, 1840 (original description)
Paradynamene benjamensis Richardson, 1905 accepted as Cerceis aspericaudata Miers, 1884 (original description)
Pentidotea Richardson, 1905 (original description)
Probopyria alphei (Richardson, 1900) accepted as Capitetragonia alphei (Richardson, 1900) (source of synonymy)
Pseudarmadillo dollfusi Richardson, 1905 accepted as Pseudarmadillo carinulatus de Saussure, 1857 (original description)
Tole spinosa (Harger, 1879) accepted as Ianthe spinosa (Harger, 1879) (new combination reference)
Tridentella Richardson, 1905 (original description)

North Atlantic for Dajus mysidis Krøyer, 1842