Littoraria undulata

Littoraria undulata, common name the robust shell, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.^[1]

Littoraria undulata
Shell of Littoraria undulata (specimen at MNHN, Paris)
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Littorinidae
Genus:	Littoraria
Species:	L. undulata
Binomial name
Littoraria undulata (Gray, 1839)
Synonyms[1]
Litorina tenuis Philippi, 1846 (junior synonym) Littorina (Littoraria) undulata Gray, 1839 Littorina acuminata Gould, 1849 Littorina undulata (Gray, 1839) Melarhaphe undulata (Gray, 1839)

Description

Up to 2 cm, with dull brown coloration, occasionally darker on upper whorls, and with very faint pattern of wide zigzag lines (pattern fading in larger specimens).

Habitat: on rocks, mangrove trunks and drift wood.^[1]

Distribution

This species occurs in the Indo-Pacific Region and off the Philippines.