Puncturella demissa

Taxobox
name = "Puncturella demissa"
status =
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Prosobranchia
ordo = Archaeogastropoda
superfamilia = Fissurelloidea
familia = Fissurellidae
genus = "Puncturella"
species = "P. demissa"
binomial = "Puncturella demissa"
binomial_authority = Hedley, 1904
synonyms =

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

Distribution

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

Habitat

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

hell 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.

References

* Powell A. W. B., "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1