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Rh Melongena corona perspinosa Pilsbry and Vanatta appears to be a good subspecies. (Tampa south to Lossmans Key, Florida). Up to 4% inches in length, heavier and wider than corona, with a wider aperture, and with shoulder spines standing out at right angles, and with 2 or 3 rows of smaller spines below the larger ones. A descendant possibly of the Pliocene subspecies subcoronata Heilprin. Soft parts and radula described and figured in Frank Lyman's excellent Shell Notes, vol. 2, no. 2-3, 1948 (published privately by Lyman, Lantana, Florida).

Figure 52. Two forms of the Crown Conch, Melongena corona Gmelin, from Florida, a, sandy area; b and c, from oyster bed. Reduced %. Melongena melongena Linne West Indian Crown Conch Plate 2 3h Florida Keys (?) and the West Indies. 3 to 6 inches in length, similar to corona, but heavier, with rounded shoulders; smaller, more solid spines, and with a distinct channel at the suture. Common in the Greater Antilles. Genus Busy con Roding 1798 {Fulgiir Montfort) Knobbed Whelk Plate 2 3i Busy con carica Gmelin South shore of Cape Cod to central east Florida. Adults 5 to 9 inches in length; characterized by having low tubercles on the shoulder of the whorl and in being right-handed. Aperture light orange-yellow, but sometimes brick-red. The young show axial streaks of brownish purple. Common in shallow water.