Keyword: "unio" | ClipArt ETC

"The <em>U. elongata</em> is found in Great Britain, and formerly produced numerous pearly; these were famous even in the time of Julius Caeser. In Ireland and Scotland this species has produced pearly, in modern times, valued at between twenty to four hundred dollars." — Goodrich, 1859

Unio elongata

"The U. elongata is found in Great Britain, and formerly produced numerous pearly; these were…

"The <em>unio pictorium</em> is common in Europe, and derived its name from the fact that its shell was formerly used by painters to hold their colors." — Goodrich, 1859

Unio pictorium

"The unio pictorium is common in Europe, and derived its name from the fact that its shell…

"The <em>U. spinosa</em> is found in the Mississippi River." — Goodrich, 1859

Unio spinosa

"The U. spinosa is found in the Mississippi River." — Goodrich, 1859