Puncturella demissa

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Puncturella demissa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Prosobranchia
Order: Archaeogastropoda
Superfamily: Fissurelloidea
Family: Fissurellidae
Genus: Puncturella
Species: P. demissa
Binomial name
Puncturella demissa
Hedley, 1904

Puncturella demissa is a species of keyhole limpet, a marine gastropod mollusc in the family Fissurellidae.

Contents

[edit] Distribution

This species is endemic to New Zealand's Foveaux Strait, Stewart Island and The Snares.

[edit] Habitat

This keyhole limpet is found in shell-sand at depths of about 90 m.

[edit] Shell description

The shell is minute, ovate, thin, cap-shaped, and arched, with the inrolling apical whorls at the extreme posterior end, and overhanging the steep concave posterior slope. The slit is long and narrow, more than three times longer than it is wide, the actual foramen parallel to the dorsal surface. Inside, it is completely bridged by a well developed Crepidula-like septum. The exterior of the shell is almost smooth, with obsolete radials and very faint concentric growth lines.

Coloration is white.

The shell height is up to 1 mm, width up to 1.2 mm, and length up to 1.8 mm.

[edit] References