Contents

• Archaeogastropoda
  • Abalones
  • Keyhole Limpets
  • True Limpets
  • Top-Shells
  • Turban Shells
• Caenogastropoda
  • Horn Snails
  • Turritellas
  • Worm-Shells
  • Ceriths
  • Conchs
  • Cowries
  • Egg Shells and Allied Cowries
  • Lamellarias
  • Trivias
  • Moon Snails
  • Helmet Shells
  • Frog Shells
  • Tritons and Hairy Tritons
  • Tunshells
  • Fig Shells
  • Wentletraps
  • Janthinas
  • Murex Shells and Rock Shells
  • Chank Shells
  • Dove Shells
  • Nassa Mud Snails
  • Melongenas
  • Horse Conchs
  • Pygmy Tritons
  • Volutes
  • Olivas
  • Harps
  • Marginellas
  • Nutmegs
  • Miters
  • Cones
  • Augers
• Allogastropoda
  • Pyrams
  • Sundials
• Cephalaspidea
  • Headshield Slugs
• Anaspidea
  • Sea Hares
• Notaspidea
  • Sidegill Slugs
• Sacoglossa
  • Sap-sucking Slugs
• Nudibranchia
  • True Sea Slugs