The authority for Eulima excellens listed in WoRMS is Verkrüzen fide Paetel, 1887. "fide" basically just means "according to" - it isn't part of the scientific name. There are currently three other names on iNat imported from external sources (the Reptile Database in these cases) with the same error (fide being mistakenly interpreted as part of the name in the import process): "Ptychemys mobilensis fide" and "Emys ventricosa fide", listed as synonyms of Pseudemys concinna, and "Echis arenicola fide", listed as a synonym of Echis pyramidum.