Natricidae
Natrix astreptophora (Seoane, 1884) - Iberian Grass Snake
Adult. April 2006, La Sauceda, PN Alcornocales, Andalusia, ES
No collar, iris orange
Juvenile. October 2003, Castañar de Ibor, Extremadura, ES
Natrix helvetica (Lacépède, 1789) - Barred Grass Snake
Nominate subsp. adult. April 2007, Olloy-sur-Virion, BE
2-4 postoculars, 1 preocular. May 2000, La Brenne, dept. Indre, FR
N. h. cetti adult. April 1999, U Fangu river, Galéria, dept. Haute-Corse, FR
N. h. cetti heavily marked juvenile. August 2019, E of Col de Vergio, Haut-Corse, FR
N. h. sicula often with orange snout. April 2010, Mongiana, Calabria, IT
N. h. sicula melanistic individual. April 2010, Mongiana, Calabria, IT
Natrix maura (Linnaeus, 1758) - Viperine Snake
October 2010, Torrent des Mercadal, Menorca, ES
Often viper-like pattern on back. April 2006, Cota Doñana, Andalusia, ES
2 postoculars, 2 (sometimes 1) preoculars. July 2004, Near Urdos, dept. Pyrénées-Atlantiques, FR
Natrix natrix (Linnaeus, 1758) - Grass Snake
Nominate subsp. July 2022, Malexander, Östergötland, SE
N. n. persa. May 2004, Dadiaforest, Thrace, GR
N. n. persa. June 2011, Fatsadhika, Kythera, GR
N. n. schweizeri. May 2006, Milos, Western Cyclades, GR
N. n. schweizeri melanistic individual. May 2006, Milos, Western Cyclades, GR
Natrix tessellata (Laurenti, 1768) - Dice Snake
October 2006, near Lake Kaiafas, Peloponnese, GR
3-4 postoculars, 2-3 preoculars. June 2009, near Axos, Crete, GR
Melanistic individual. June 2009, Lake Kournas, Crete, GR