- Semicassis thomsoni
Taxobox
name = "Semicassis thomsoni"
image_caption =
regnum =Animal ia
phylum = Mollusca
classis =Gastropod a
ordo =Littorinimorpha
familia =Tonnidae
subfamilia =Cassinae
genus = "Semicassis "
species = "S. thomsoni"
binomial = "Semicassis thomsoni"
binomial_authority = (Brazier, 1875)"Semicassis thomsoni" is a
species of largepredatory seasnail , a marinegastropod mollusc . This species is in thesubfamily Tonnidae , the helmet shells and bonnet shells, which feed onsea urchin s.Distribution
This species is found in south east
Australia and along the eastern coast of Northland in theNorth Island ofNew Zealand .Distribution
This snail lives at depths of between 35 and 80 m.
hell description
The shell is moderately large, fairly thin, and with one or two peripheral series of weak, laterally compressed nodules, each row on a raised spiral ridge. The inner lip callus shield is strongly warped outwards medially, and is also strongly wrinkled.
The shell coloration is pinkish-buff, with four spiral rows of rectangular reddish-brown markings.
The maximum shell height is 78 mm, and width 51 mm.
References
* Powell A. W. B., William Collins Publishers Ltd, Auckland
1979 ISBN 0-00-216906-1
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