Richters 1912 Hypsibius Nomenclature Batillipes Arctiscoida Tardigrada Author(s)Richters, FerdinandJournal Titleunpublished letter to Hay, 1912-12-22Year Published1912Files(s)richters-7a.jpgrichters-7b.jpgrichters-7c.jpgrichters-7d.jpgrichters-7e.jpgrichters-7f.jpgNotesRichters responds to Hay 1906