Opinions from M. J. Rathbun 1935
- 'Actaea belongs to Xanthidae'
- 'Actaea cretacea belongs to Actaea'
- 'Aegidae belongs to Isopoda'
- 'Archaeocarabus belongs to Palinuridae'
- 'Archaeocarabus gardnerae belongs to Archaeocarabus'
- 'Archaeoplax signifera belongs to Archaeoplax'
- 'Avitelmessus belongs to Atelecyclidae'
- 'Avitelmessus grapsoideus belongs to Avitelmessus'
- 'Calappa marmorata is a subjective synonym of Calappa flammea'
- 'Calappilia belongs to Calappidae'
- 'Calappilia diglypta belongs to Calappilia'
- 'Callianassa belongs to Callianassidae'
- 'Callianassa aquilae belongs to Callianassa'
- 'Callianassa atlantica belongs to Callianassa'
- 'Callianassa berryi belongs to Callianassa'
- 'Callianassa bosqueana belongs to Callianassa'
- 'Callianassa cretacea belongs to Callianassa'
- 'Callianassa floridana belongs to Callianassa'
- 'Callianassa gamma belongs to Callianassa'
- 'Callianassa mortoni belongs to Callianassa'
- 'Callianassa mortoni punctimanus belongs to Callianassa mortoni' according to Pilsbry 1916
- 'Callianassa mortoni punctimanus belongs to Callianassa mortoni'
- 'Callianassa oktibbehana belongs to Callianassa'
- 'Callianassa pilsbryi belongs to Callianassa'
- 'Callianassa suffolkensis belongs to Callianassa'
- 'Callianassa valida belongs to Callianassa'
- 'Callianassa vaughani belongs to Callianassa'
- 'Callinectes belongs to Portunidae'
- 'Callinectes alabamensis belongs to Callinectes'
- 'Callinectes sapidus belongs to Callinectes'
- 'Caloxanthus belongs to Xanthidae'
- 'Caloxanthus americanus belongs to Caloxanthus'
- 'Campylostoma pierrense is recombined as Necrocarcinus pierrensis'
- 'Cancer araneus is recombined as Hyas araneus'
- 'Cancer araneus belongs to Cancer' according to Linnaeus 1758
- 'Cancer borealis belongs to Cancer'
- 'Cancer flammeus is recombined as Calappa flammea'
- 'Cancer irroratus belongs to Cancer'
- 'Cancer limosa is recombined as Eurytium limosum'
- 'Cancer mercenaria is recombined as Menippe mercenaria'
- 'Cancer proavitus belongs to Cancer'
- 'Cancer punctata is recombined as Persephona punctata'
- 'Cancer whitfieldi is recombined as Archaeocarabus whitfieldi'
- 'Dakoticancer belongs to Dakoticancridae'
- 'Dakoticancer overana belongs to Dakoticancer'
- 'Dakoticancer overana australis belongs to Dakoticancer overana'
- 'Dromia belongs to Dromiidae'
- 'Dromia anomala belongs to Dromia'
- 'Dromilites americana belongs to Dromilites'
- 'Enoploclytia belongs to Erymidae'
- 'Enoploclytia sculpta belongs to Enoploclytia'
- 'Enoploclytia tumimanus belongs to Enoploclytia'
- 'Enoploclytia wenoensis belongs to Enoploclytia'
- 'Eryma americana belongs to Eryma'
- 'Eryma flecta belongs to Eryma'
- 'Eryma stantoni belongs to Eryma'
- 'Galenopsis belongs to Xanthidae'
- 'Galenopsis americana belongs to Galenopsis'
- 'Gelasimus pugnax is recombined as Uca pugnax'
- 'Glyphea belongs to Glypheidae'
- 'Glyphea carolinensis belongs to Glyphea'
- 'Glypturus berryi belongs to Glypturus'
- 'Gonodactylus oerstedii belongs to Gonodactylus' according to Hansen 1895
- 'Gonodactylus oerstedii belongs to Gonodactylus'
- 'Graptocarcinus belongs to Dynomenidae'
- 'Graptocarcinus texanus belongs to Graptocarcinus'
- 'Harpactocarcinus belongs to Xanthidae'
- 'Harpactocarcinus americanus belongs to Harpactocarcinus'
- 'Harpactocarcinus mississippiensis belongs to Harpactocarcinus'
- 'Harpactocarcinus rathbunae is recombined as Neozanthopsis rathbunae'
- 'Homarus americanus belongs to Homarus'
- 'Hoploparia belongs to Homaridae'
- 'Hoploparia blossomana belongs to Hoploparia'
- 'Hoploparia canadensis is recombined as Linuparus canadensis'
- 'Hoploparia dentonensis belongs to Hoploparia'
- 'Hoploparia gabbi belongs to Hoploparia'
- 'Hoploparia georgeana belongs to Hoploparia'
- 'Hoploparia gladiator belongs to Hoploparia'
- 'Hoploparia mcnairyensis belongs to Hoploparia'
- 'Hoploparia tarrantensis belongs to Hoploparia'
- 'Hoploparia tennesseensis belongs to Hoploparia'
- 'Ischnodactylus belongs to Homaridae'
- 'Ischnodactylus cookei belongs to Ischnodactylus'
- 'Ischnodactylus cookei lowei belongs to Ischnodactylus cookei'
- 'Ischnodactylus cultellus belongs to Ischnodactylus'
- 'Ischnodactylus dentatus belongs to Ischnodactylus'
- 'Ischnodactylus texanus belongs to Ischnodactylus'
- 'Libinia dubia belongs to Libinia'
- 'Libinia emarginata belongs to Libinia'
- 'Linuparus belongs to Palinuridae'
- 'Linuparus adkinsi belongs to Linuparus'
- 'Linuparus kleinfelderi belongs to Linuparus'
- 'Linuparus wilcoxensis belongs to Linuparus'
- 'Lobonotus foerstei belongs to Lobonotus'
- 'Lupa sayi belongs to Lupa' according to Gibbes 1850
- 'Lupa sayi is recombined as Portunus (Portunus) sayi'
- 'Menippe belongs to Xanthidae'
- 'Menippe anomala belongs to Menippe'
- 'Menippe burnsi belongs to Menippe'
- 'Menippe cretacea belongs to Menippe'
- 'Menippe floridana belongs to Menippe'
- 'Menippe jacksonensis belongs to Menippe'
- 'Menippe nodifrons belongs to Menippe'
- 'Meyeria belongs to Glypheidae'
- 'Meyeria mexicana belongs to Meyeria'
- 'Necrocarcinus belongs to Calappidae'
- 'Necrocarcinus graysonensis belongs to Necrocarcinus'
- 'Necrocarcinus oklahomensis belongs to Necrocarcinus'
- 'Necrocarcinus texensis belongs to Necrocarcinus'
- 'Necronectes belongs to Portunidae'
- 'Necronectes drydeni belongs to Necronectes'
- 'Necronectes vaughani belongs to Necronectes'
- 'Nephrops belongs to Homaridae'
- 'Nephrops americanus belongs to Nephrops'
- 'Notopocorystes belongs to Raninidae'
- 'Notopocorystes parvus belongs to Notopocorystes'
- 'Notopocorystes punctatus belongs to Notopocorystes'
- 'Notopocorystes ripleyensis belongs to Notopocorystes'
- 'Notosceles belongs to Raninidae'
- 'Notosceles bournei belongs to Notosceles'
- 'Ocalina belongs to Xanthidae'
- 'Ocalina floridana belongs to Ocalina'
- 'Ocypode albicans belongs to Ocypode' according to Bosc 1802
- 'Ocypode albicans belongs to Ocypode'
- 'Ophthalmoplax belongs to Portunidae'
- 'Ophthalmoplax comancheensis belongs to Ophthalmoplax'
- 'Ophthalmoplax stephensoni belongs to Ophthalmoplax'
- 'Paguristes belongs to Paguridae'
- 'Paguristes chipolensis belongs to Paguristes'
- 'Paguristes ouachitensis belongs to Paguristes'
- 'Pagurus belongs to Paguridae'
- 'Pagurus banderensis belongs to Pagurus'
- 'Palaeastacus belongs to Erymidae'
- 'Palaeastacus kimzeyi belongs to Palaeastacus'
- 'Palaeastacus selmaensis belongs to Palaeastacus'
- 'Palaega belongs to Aegidae'
- 'Palaega guadalupensis belongs to Palaega'
- 'Palaega williamsonensis belongs to Palaega'
- 'Panopeus belongs to Xanthidae'
- 'Panopeus estellensis belongs to Panopeus'
- 'Panopeus herbstii belongs to Panopeus'
- 'Paramithrax walkeri is recombined as Palaeastacus walkeri'
- 'Parthenope (Platylambrus) charlottensis belongs to Parthenope (Platylambrus)'
- 'Penaeus belongs to Penaeidae'
- 'Penaeus wenasogensis belongs to Penaeus'
- 'Petrochirus belongs to Paguridae'
- 'Petrochirus bouvieri belongs to Petrochirus'
- 'Petrochirus inequalis belongs to Petrochirus'
- 'Petrochirus taylori belongs to Petrochirus'
- 'Plagiolophus belongs to Xanthidae'
- 'Plagiolophus bakeri belongs to Plagiolophus'
- 'Podocrates vancouverensis is recombined as Linuparus vancouverensis'
- 'Prehepatus belongs to Calappidae'
- 'Prehepatus cretaceus belongs to Prehepatus'
- 'Prehepatus pawpawensis belongs to Prehepatus'
- 'Ranina belongs to Raninidae'
- 'Ranina georgiana belongs to Ranina'
- 'Raninella belongs to Raninidae'
- 'Raninella armata belongs to Raninella'
- 'Raninella eocenica belongs to Raninella'
- 'Raninella mucronata belongs to Raninella'
- 'Raninella starkvillensis belongs to Raninella'
- 'Raninella testacea belongs to Raninella'
- 'Raninoides belongs to Raninidae'
- 'Raninoides ovalis belongs to Raninoides'
- 'Scylla floridana belongs to Scylla'
- 'Squilla empusa is recombined as Chloridella empusa'
- 'Squilla empusa belongs to Squilla' according to Say 1818
- 'Stenocionops belongs to Majidae'
- 'Stenocionops primus belongs to Stenocionops'
- 'Stenocionops suwanneeana belongs to Stenocionops'
- 'Symethis belongs to Raninidae'
- 'Symethis johnsoni belongs to Symethis'
- 'Symnista belongs to Raninidae'
- 'Symnista bidentata belongs to Symnista'
- 'Tetracarcinus belongs to Dakoticancridae'
- 'Tetracarcinus subquadratus belongs to Tetracarcinus'
- 'Xanthilites alabamensis belongs to Xanthilites'
- 'Xanthopsis errans is recombined as Zanthopsis errans'
- 'Xanthosia belongs to Dynomenidae'
- 'Xanthosia aspera belongs to Xanthosia'
- 'Xanthosia wintoni belongs to Xanthosia'
- 'Zanthopsis belongs to Xanthidae'
- 'Zanthopsis carolinensis belongs to Zanthopsis'
- 'Zanthopsis peytoni belongs to Zanthopsis'