Bolma girgyllus

Bolma girgyllus,[1][2] common name the girgyllus star snail, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.

Bolma girgyllus
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Turbinidae
Genus: Bolma
Species:
B. girgyllus
Binomial name
Bolma girgyllus
(Reeve, 1861)
Synonyms

Trochus girgyllus Reeve, 1861 (Basionym)

Dorsal view of shell of Bolma gyrgillus

Description

The shell has an equilateral-triangle profile, being approximately as tall as it is wide. The whorls are slightly inflated and are sculpted with strongly beaded spiral threads and a row of splayed hollow spines along the shoulder. A smaller second row of spines is situated below the shoulder on the last whorl. The base color of the shell is lavender to reddish purple with golden maculations outlined in a darker purple. The base has strong spiral threads which are weakly beaded and is paler in color than the body, with scattered darker and lighter beads along the threads. The siphonal canal is closed and is ivory white near the aperture with a golden yellow to orange edge adjacent to the base. The aperture is white and nacreous. The size of the adult shell varies between 30 mm and 80 mm.

Distribution

This species occurs in the Pacific Ocean off the Philippines, the Moluccas, Taiwan and Vietnam.

References
  1. Bolma girgyllus (Reeve, 1861). Retrieved through: World Register of Marine Species on 20 April 2010.
  2. Beu A.G. & Ponder W.F. (1979) A revision of the species of Bolma Risso, 1826 (Gastropoda: Turbinidae). Records of the Australian Museum 32(1): 1–68. [31 May 1979], available online at http://web1.australianmuseum.net.au/Uploads/Journals/17534/201_complete.pdf
  • Williams, S.T. (2007). Origins and diversification of Indo-West Pacific marine fauna: evolutionary history and biogeography of turban shells (Gastropoda, Turbinidae). Biological Journal of the Linnean Society, 2007, 92, 573–592.
  • Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1–82, pls 104-245
  • "Bolma (Harisazaea) girgylla". Gastropods.com. Retrieved 2 April 2011.
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