Conus xanthicus

Conus xanthicus
Shell and protoconch of Conus xanthicus (holotype at the Smithsonian Institution)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Conidae
Genus:	Conus
Species:	C. xanthicus
Binomial name
Conus xanthicus Dall, 1910
Synonyms [1]
Conus (Dauciconus) xanthicusDall, 1910 · accepted, alternate representation Conus chrysocestusBerry, 1968 Dauciconus xanthicus(Dall, 1910)

Conus xanthicus, common name the Guaymas cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies. ^[1]

These snails are predatory and venomous. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.

Description

Original description by W.H. Dall: The shell is biconic, solid, with a low, slightly turreted spire, straight sides and about ten whorls. The surface of the whorls on the spire are evenly excavated, smooth, or with two or three faint spiral striae in the channel. The periostracum is dense, brown, and velvety, except where cleaned off, when the substratum, which is very adherent, may appear polished. The suture is simple. The sides of the shell are straight, smooth, with very faint indications of obsolete spiral striation, the striae rather distant. Near the siphonal canal there are, as usual, a few spiral cords. The outer lip is straight, receding to the sinus at each extremity. The ground color of the shell is white with broad brownish yellow irregular areas so disposed as to indicate three irregular white spiral areas, one near the canal, one at about the middle of the side, and the third somewhat in front of the shoulder. In another specimen the yellow color is generally diffused and only the central band is obscurely indicated. There is no pattern on the spire. Height of the shell, 42 mm; of the shoulder, 37 mm; maximum diameter of the shell, 22.5; of the canal, 5 mm. ^[2]

The size of the shell varies between 22 mm and 50 mm.

Distribution

This marine species occurs in the Gulf of California, Western Mexico down to Honduras; off the Galápagos Islands.

References

1. Conus xanthicus Dall, 1910. Retrieved through: World Register of Marine Species  on 27 March 2010.
2. W.H. Dall, Summary of the Shells of the Genus Conus from the Pacific Coast of America in the U.S. National Museum; Proceedings of the National Museum v.38 (1911)

• McLean, J. H. & J. Nybakken. 1979. On the growth stages of Conus jergusoni Sowerby, 1873, the reinstatement of Conus xanthicus Dall, 1910, and a new species of Conus from the Galapagos Islands. Veliger 22: 135–144.
• Tucker J.K. & Tenorio M.J. (2013) Illustrated catalog of the living cone shells. 517 pp. Wellington, Florida: MdM Publishing
• Puillandre, N.; Duda, T.F.; Meyer, C.; Olivera, B.M.; Bouchet, P. (2015). "One, four or 100 genera? A new classification of the cone snails". Journal of Molluscan Studies. 81 (1): 1–23. doi:10.1093/mollus/eyu055. PMC   4541476 . PMID   26300576.

External links

• The Conus Biodiversity website
• "Dauciconus xanthicus". Gastropods.com. Retrieved 16 January 2019.