Answer:
"Biscia dal collare" or "natrice dal collare" may be Italian equivalents of "water snake" (Natrix natrix).
The Italian words "biscia" and "natrice" are feminine nouns. Their singular definite article is "la" ("the"), and their singular indefinite article "una" ("a, one"). The word "dal" combines the preposition "da" with the masculine singular definite article "il" to mean "of, from the." The masculine noun "collare" means "necklace." Its singular definite article is "il," and its singular indefinite article "un, uno."
The respective pronunciations are "BEE-shah dahl kohl-LAH-reh" and "nah-TREE-tcheh dahl kohl-LAH-reh."
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