23 Diodora graeca

23 Diodora graeca

Right side-view. Apical spiral protoconch, with spire inclined to right side of shell, enlarged to show former shape (white dots), now part- dissolved by lappets of growing siphon. Protoconch entirely lost at later stage.
.Juvenile, length 5.5 mm. Menai Strait, Wales. March 2015.