The Cayenne and Meta Limpets
As suggested recently by a Museum friend, here is a brief comparison between the shells of two local (Southwest Florida) keyhole limpets. The Cayenne Keyhole Limpet, Diodora cayenensis, is on the top row, the Meta Keyhole Limpet, Diodora meta, on the bottom row. The Cayenne may reach about 25 mm (one inch) locally, whereas Meta may grow to be only half as much. Notice, (1) the color, almost completely absent in Meta; (2) the general outline, more “oval” in Cayenne, more elong