caption: The image shows three different types of conch shells on a black background, with the text "Glyphostoma adria dall, 1919" at the top. The shells are arranged in a triangular formation, with one shell in the center and two on either side. The colors of the shells range from light brown to dark brown, with some having a glossy finish. The text is written in a bold, white font, making it stand out against the dark background.