Eupleura caudata (Say, 1822) Thick-lip Drill Egg Capsules

    Beached on old Horseshoe Crab [Limulus polyphemus] shell, Mayport Naval Station Beach, Jacksonville, Duval County, Florida 3/8/2008. The small shell pictured in the image, bottom left, is a Sharp Nassa [Phrontis acutus (Say, 1822)].