shelled snails text index | photo index
Phylum Mollusca > Class Gastropoda
Waved mitre snails
Pterygia undulosa
Family Mitridae
updated Oct 2019
Where seen? This bullet-shaped burrowing snail was seen on Changi and Chek Jawa. Initially in some numbers, then dwindling away.

Features: 2-5cm. Shell thick with fine ridges in a cross-hatched pattern. The shell has a dark 'skin' which can peel off. There is notch at the tip of the shell for the siphon to emerge. The animal is white with a broad foot and short tentacles. Operculum small and brown.

What does it eat? Mitre snails are carnivorous and many feed on worms. They may also scavenge.

Changi, Aug 12

Changi, Aug 12

One big one with two smaller ones. Mating?
Changi, Aug 12
Baby mitres: The snail was seen in groups of several individuals with small egg capsules laid on hard surfaces nearby.

Changi, Sep 15

Egg capsules laid on a Window-pane shell.
Changi, Sep 15

Laying egg capsules on a dead bivalve shell.
Changi, Sep 15

Waved mitre snails on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Chek Jawa, May 16
Photo shared by Ivan Kwan on facebook.

Changi, Dec 17
Photo shared by Loh Kok Sheng on facebook.


Family Mitridae recorded for Singapore
from Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore.
^from WORMS.

  Family Mitridae
  Cancilla filiaris=^Domiporta filaris
Cancilla granatina=^Domiporta granatina

Mitra ambigua
Mitra fraga
Mitra mitra
Mitra proscissa
Mitra puncticulata
Mitra rosacea
Mitra scutulata
Mitra stictica

Neocancilla circula

Pterygia dactylus
Pterygia undulosa
(Waved mitre snail)

Subcancilla interlirata

Ziba insculpta

Thanks to Neo Mei Lin for sorting out the identification of this snail on her blog, and to Tan Siong Kiat for identifying it.

  • Family Mitridae in the Gastropods section by J.M. Poutiers in the FAO Species Identification Guide for Fishery Purposes: The Living Marine Resources of the Western Central Pacific Volume 1: Seaweeds, corals, bivalves and gastropods on the Food and Agriculture Organization of the United Nations (FAO) website.


  • Ria Tan & Tan Siong Kiat. 25 Sep 2015 Spawning aggregations of waved mitre snails, Pterygia undulosa, at Changi Singapore Biodiversity Records 2015: 142-144
  • Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore (pdf), Raffles Museum of Biodiversity Research, National University of Singapore.
  • Abbott, R. Tucker, 1991. Seashells of South East Asia. Graham Brash, Singapore. 145 pp.
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008