Cirsonella pisiformis
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| Cirsonella pisiformis | ||||||||||||||||||
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| Cirsonella pisiformis Powell, 1937 |
Cirsonella pisiformis is a minute sea snail, a marine gastropod mollusc in the family Cyclostrematidae.
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[edit] Distribution
This species is endemic to New Zealand's Three Kings Islands.
[edit] Habitat
This species is found at depths of about 475 m.
[edit] Shell description
The shell is minute, subglobose, very solid and smooth, except for dense very fine and inconspicuous spiral striations. The umbilicus is about one seventh the diameter of the base, deep, with a crenulated edge, and traversed medially by a spiral ridge, that extends to the lower edge of the columellar lip.
Shell coloration is white.
The shell height is up to 1.3 mm, and the width is up to 1.45 mm.
[edit] References
- Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
