Birgella subglobosus (Say, 1825)

Classification

• Birgella F. C. Baker, 1926

  • Birgella subglobosus (Say, 1825)

    • Birgella subglobosus isogonus (Say, 1829)

    • Birgella subglobosus subglobosus (Say, 1825)