Siphonaria cookiana

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Siphonaria cookiana
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Orthogastropoda
Superorder: Heterobranchia
Order: Pulmonata
Family: Siphonariidae
Genus: Siphonaria
Species: S. cookiana
Binomial name
Siphonaria cookiana
Suter, 1909

Siphonaria cookiana is a species of small air-breathing sea snail or false limpet, a marine pulmonate gastropod mollusc in the family Siphonariidae, the false limpets.

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[edit] Distribution

This species of false limpet is endemic to New Zealand. It is found throughout New Zealand including Stewart Island and the Chatham Islands.

[edit] Habitat

This snail lives on rocks at low tide level in clear water situations.

[edit] Shell description

The shell is small, broadly ovate, with a central, rather sharply conical apex. Sculpture consists of about 17 smooth, rounded radial ribs.

The shell coloration is dark brown on the apex, fading to greyish-fawn towards the margin, with whitish ribs. Internally, it is purplish-brown fading to whitish at the margin, always with a whitish streak following the lateral groove to the middle.

The shell length is up to 15 mm, width up to 12.5 mm, and height up to 5.5 mm.

[edit] References