Amphidromus atricallosus leucoxanthus (von Martens, 1854)

    A lot of white, dextral shells that shows the wide range of sizes and shapes of adult specimens. This lot ranges from 32mm to 53mm. Some are thick-shelled, some very thin. Some are elongated, others short and squat. Some are almost “shouldered’.  All of these shapes and sizes can often be found in the same colony. However, some colonies may have predominantly one form over others. For instance, more than one colony has been described as “dwarf”.