margaratifera

Updated: June 4, 2025

A considerable number are likewise taken from the Unio margaratifera, which inhabits the rivers of Europe; and, it is singular, as remarked by Humboldt, that though several species of this genus abound in the rivers of South America, no pearls are ever found in them.

Various - The Mirror of Literature, Amusement, and Instruction : Volume 20, No. 570, October 13, 1832