Sulcate Bean Cowry (species: Trivirostra oryza) in Lizard Island area: all known taxa (Lizard Island Field Guide)
Trivirostra oryza
Sulcate Bean Cowry

©Barbara Banks: Trivirostra oryza at Lizard Island Queensland

©Barbara Banks: Trivirostra oryza at Lizard island Queensland 10mm

©Lexie Gersbeck and Gabi Howarth: Trivirostra oryza from the reeef crest and flat between Bird and South Islands, Lizard Island Group. The larger specimen is about 1 cm long.
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Order Littorinimorpha
Family Triviidae
Genus Trivirostra
Species Trivirostra oryza



Distinguishing features

Distinguishing features still need to be specified.


  • Up to 0.8 cm (length according to Wilson, 1993)
  • Up to 1 cm (specimens at Lizard Island)



©Atlas of Living Australia: Australian distribution

Web resources


References that assist with identification

  • Wilson, B. (1993). Australian Marine Shells: 1. Prosobranch gastropods Odyssey Publishing, Kallaroo, Western Australia.

Other references

  • Robertson, R. (1981). List of shell-bearing mollusks observed and collected at Lizard Island, Great Barrier Reef, Australia, Tryonia, 4: 1-32. LIRS catalog number 403.