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A. The Las Perlas Archipelago, located off the west coast of Panama (see Inset), is the collection site for the terebrids analyzed. The numbers shown on the map refer to the stations for the Panamic specimens listed in Table 1. B. Las Perlas specimens of Acus and Terebra analyzed in this study. Top left, Acus strigatus. Bottom left, Terebra ornata. Top right-most specimen, Terebra cf. formosa. All other specimens are Terebra argyosia.
