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Natrix is a genus of Old World snakes found mainly across Eurasia in the subfamily Natricinae of the family Colubridae. They are commonly called grass snakes and water snakes, but some other snake species also known commonly as "grass snakes" and "water snakes" are not in the genus.
In the 10th edition of Systema Naturae, Carl Linnaeus described the Amphibia as:
Animals that are distinguished by a body cold and generally naked; stern and expressive countenance; harsh voice; mostly lurid color; filthy odor; a few are furnished with a horrid poison; all have cartilaginous bones, slow circulation, exquisite sight and hearing, large pulmonary vessels, lobate liver, oblong thick stomach, and cystic, hepatic, and pancreatic ducts: they are deficient in diaphragm, do not transpire (sweat), can live a long time without food, are tenatious of life, and have the power of reproducing parts which have been destroyed or lost; some undergo a metamorphosis; some cast (shed) their skin; some appear to live promiscuously on land or in the water, and some are torpid during the winter.
References
- ↑ "The Reptile Database".
- ↑ Speybroek, Jeroen; Beukema, Wouter; Bok, Bobby; Van Der Velikov, Jan; Velikov, Ilian (2016). Field guide to the amphibians and reptiles of Britain and Europe. London and New York: Bloomsbury. p. 15. ISBN 978-1-4729-2562-6.
- ↑ Kindler, Carolin; Chèvre, Maxime; Ursenbacher, Sylvain; Böhme, Wolfgang; Hille, Axel; Jablonski, Daniel; Vamberger, Melita; Fritz, Uwe (2017), "Hybridization patterns in two contact zones of grass snakes reveal a new Central European snake species", Scientific Reports, 7 (7378), doi:10.1038/s41598-017-07847-9, PMC 5547120
- ↑ van Riemsdijk, Isolde; Struijk, Richard P. J. H.; Pel, Eran; Janssen, Ingo A. W.; Wielstra, Ben (2020), "Hybridisation complicates the conservation of Natrix snakes in the Netherlands", Salamandra, 5
