Semicassis thomsoni
From Wikipedia, the free encyclopedia
| Semicassis thomsoni | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Scientific classification | ||||||||||||||||
|
||||||||||||||||
| Binomial name | ||||||||||||||||
| Semicassis thomsoni (Brazier, 1875) |
Semicassis thomsoni is a species of large predatory sea snail, a marine gastropod mollusc. This species is in the subfamily Tonnidae, the helmet shells and bonnet shells, which feed on sea urchins.
Contents |
[edit] Distribution
This species is found in south east Australia and along the eastern coast of Northland in the North Island of New Zealand.
[edit] Distribution
This snail lives at depths of between 35 and 80 m.
[edit] Shell 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.
