Cerithideopsis scalariformis (Say, 1825) Ladder Hornsnail

Cerithideopsis scalariformis (Say, 1825) Ladder Hornsnail
Mud flats, Plantation Key, Monroe Co., Florida Keys (23 and 21 mm.).

Cerithideopsis scalariformis (Say, 1825) Ladder Hornsnail

In salt marsh, northern end of Black Hammock Island, far northeastern Jacksonville, Duval County, Florida 5/21/2016