Photo of Animalia: Partridge Tun (species: Tonna perdix) (Lizard Island Field Guide)

Tonna perdix or Partridge tun at Lizard Island, 120mm

© Barbara Banks

The largest of the Austrailian tuns grows to 200mm, Globular and moderately thin with a simple lip and reflected columellar callus. Sculptured with rounded spiral ribs. Yellow brown or cream exterior with white dashes and brown spots. "Seashells Barry Wilson"