<p>I am looking for a single file that lists species name for every taxonomy id in NCBI. Is there such a file? I was unable to find a flat file in the taxonomy ftp site. I have been using the site below to manually do the matchings so far but it is quite un-scalable</p>

<p>http://www.ncbi.nlm.nih.gov/Taxonomy/TaxIdentifier/tax_identifier.cgi</p>

<p>I think you can find that information in a file called &quot;names.dmp&quot; that you can derive from ftp://ftp.ncbi.nih.gov/pub/taxonomy/taxdump.tar.gz. Take a look at this readme: ftp://ftp.ncbi.nih.gov/pub/taxonomy/taxdump_readme.txt</p>
