Jim,
Are you a reincarnation of Gregory Mathews?! Here is a new entry in The Key: "Manuscript names. The literature of ornithology is littered with manuscript names, generally identified in texts by the combinations MS / ms (singular) or MSS / mss (plural), but sometimes quoted verbatim without icon or explanation. Frequently appearing on museum labels or in catalogues of museum specimens, many were subsequently adopted for use as valid taxa (e.g. the regularisation of Schiff’s generic names by Bonaparte). More recently Jim Gaudin (BirdForum 2-3 July 2022) has coined over fifty new names, scattered throughout the avian orders, partly as an exercise in semantics but also in response to mooted taxonomic revisions. For the sake of completeness his bare names are here listed, but they will not be defined in The Key until they have been properly introduced into nomenclature; Agrodyta, Amaurasthenes, Arremonoides, Atopotyto, Ayresirallus, Bugralla, Caloxyechus, Cettiopsis, Chrysopipo, Clangocichla, Cnemonastes, Daphoenospiza, Drymolais, Frutexia, Gymnopoga, Haplospingus, Hartlaubina, Leucositta, Limnotriccus, Lophophanoides, Macrositta, Melanorhipis, Microbutor, Myrmozetetes, Nanocitta, Neophylidor, Neospreo, Nesocorys, Nesopneuste, Nothoprymna, Oreoriolus, Pinaromyza, Poecilophoyx, Poliothlypis, Pririt, Prosiptornoides, Prosopothraupis, Pygothlypis, Pyrrhomus, Rufaegotheles, Salvadorillas, Speculauda, Spilostethia, Spodiocara, Stictocerthia, Streptosittaca, Taeniocerca, Thapsinornis, Urotesia, Varzeicola, Vassalius, Wallaceavis, Whitelyia, Xanthillas, Zosteromyias."
