Prunum succineum (Conrad 1846), reaches about 14 mm (a little more than 0.5 inch) and, like its more common relative, the Common Atlantic Marginella, Prunum apicinum, has a very glossy shell that is probably translucent in the living snail. It differs from the Common Atlantic Marginella by its slimmer shape and more pointed spire. The image includes the original label from the Brumbach collection, indicating that the shell was collected on the “shore of Pine Island Sound, Captiva Island… In dead clam shells at low tide…” on February 26, 1968.” This level of detail associated with the shells collected by William Brumbach makes his collection very valuable from a scientific standpoint.
