The Global Catalogue of Microorganisms lists a bacterium called Achromobacter xerosis which is mentioned in several papers and patents. It once existed in the NCBI taxonomy database, with ID 216898. However, it is no longer there - going to https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=216898 just yields a "No result found" page.
Why was this species removed from the NCBI's taxonomy? I haven't managed to find any documentation on why the NCBI would purge a species from their database, nor can I see any obvious reason to do so.