White Atlantic Semele

White Atlantic Semele
Family Semelidae
Semele proficua (Pulteney, 1799) AKA tlantic Semele

The white Semeles in my collection are white or translucent or white/yellow and have ocassionally a slightly colored beak (see 1st pic below). The shell size is to 1.5" and the  shell is  compressed, thin, orbicular. It has fine growth lines concentric around its beak which is almost central and pointing forward. The Lunule is small. Color internally may be yellow or lght reddish-brown.