Capulidae

Taxobox
name = Capulidae


image_caption =
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
superordo = Caenogastropoda
ordo = Sorbeoconcha
subordo = Hypsogastropoda
infraordo = Littorinimorpha
superfamilia = Capuloidea
familia = Capulidae
familia_authority = Fleming, 1822
subdivision_ranks = Genera
subdivision = See text

"Capulidae", or the cap shells, are a taxonomic family of limpet-like sea snails, marine gastropod molluscs in the order Sorbeoconcha.

Description

Species in this family are cap-shaped or limpet-like molluscs, closely allied to the Hipponicidae, but of lighter build, and with a small coiled apex that often extends beyond the margin. The aperture is usually almost as large as the shell itself.

Sculpture is , covered by a periostracum that is often fringed or hirsute. The animal has a short broad head, an elongated foot and a very short siphon. The radula formula is 2+1+1+1+2. The central tooth is subquadrangular, multicuspid, lateral large with a finely crenulated margin, and the paired marginals curved, sharp and without denticles.

They are found attached to bivalve and gastropod shells or sometimes stones, and are ciliary, filter or parasitic feeders.

Genera within the family Capulidae

* "Capulus" Montfort, 1810
* "Cerithioderma"
* "Eatonina" Thiele, 1912
* "Krebsia" Montfort, 1810
* "Lippistes"
* "Neojanacus" Suter, 1907
* "Malluvium" Melvill, 1906
* "Rufodardanula" Ponder, 1965
* "Torellia" Lovén in Jeffreys, 1867
* "Trichosirius" finlay, 1927
* "Trichotropis" Broderip and G. B. Sowerby I, 1829
* "Zelippistes" finlay, 1927

References

*
* Powell A. W. B., "New Zealand Mollusca", William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
* [http://www.discoverlife.org/mp/20o?search=Capulidae Discover Life]