Systema Naturae, per regna tria Naturae: secundum Classes, Ordines, Genera, Species, cum Characteribus, Differentiis, Synonymis, Locis, vol. 1, part 2
Georg. Emanuel. Beer.
Available online via Biodiversity Heritage Library at http://biodiversitylibrary.org/page/25749877
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ITIS taxonomy is based on the latest scientific consensus available,
and is provided as a general reference source for interested parties.
However, it is not a legal authority for statutory or regulatory purposes.
While every effort has been made to provide the most reliable and up-to-date
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are contained in provisions of treaties to which the United States is a
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