Williamia Explained

Williamia is a genus of small sea snails or false limpets, marine pulmonate gastropod molluscs in the family Siphonariidae, the false (air-breathing) limpets.^[1]

Their development is similar to other Siphonariids.^[2]

Species

Species within the genus Williamia include:

• Williamia eximia (Nevill in G. & H. Nevill, 1869)
• Williamia gussoni Costa, 1829
• Williamia krebsii (Mörch, 1877)
• Williamia magellanica Dall, 1927
• Williamia peltoides (Carpenter, 1864) - shield false limpet
• Williamia radiata (Pease, 1860)
  • Williamia radiata nutata Headley, 1908
• Williamia subspiralis (Carpenter, 1864)

Species brought into synonymy:

• Williamia galapagana Dall : synonym of Williamia peltoides (Carpenter, 1864)
• Williamia gussonii (O. G. Costa, 1829): synonym of Williamia gussoni (Costa O. G., 1829)
• Williamia japonica Habe, 1962: synonym of Williamia radiata (Pease, 1860)
• Williamia kermadecensis (Iredale, 1912): synonym of Williamia radiata (Pease, 1860)
• Williamia nutata (Headley, 1908): synonym of Williamia radiata nutata (Headley, 1908)
• Williamia oblongata (Yokoyama, 1926): synonym of Siphonacmea oblongata (Yokoyama, 1926)
• Williamia polynesica Rehder, 1980: synonym of Williamia radiata (Pease, 1860)
• Williamia radiata Kuroda & Habe, in Habe, 1961: synonym of Williamia radiata (Pease, 1860)
• Williamia tomlini (Robson, 1913): synonym of Aporemodon tomlini Robson, 1913

References

• • Discover Life
• Marshall B.A. (1981) The genus Williamia in the western Pacific (Mollusca: Siphonariidae). New Zealand Journal of Zoology 8: 487-492

Notes and References

1. Bouchet, P.; Gofas, S. (2011). Williamia Monterosato, 1884. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138490 on 2011-02-08
2. Collin, Rachel. 2000. The development of three heterobranch mollusks from California, USA. The Nautilus, 114(3): 117-119.