''Conus furvus'', common name the dark cone, is a species of predatory

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family

Conidae Conidae, with the current common name of "cone snails", is a taxonomic family (previously subfamily) of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea. The 2014 classification of the superfamily Conoidea, groups onl ...

, the cone snails, cone shells or cones.WoRMS (2010). Conus furvus Reeve, 1843. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=428130 on 2011-07-23

Description

The size of an adult shell varies between 30 mm and 71 mm. The ground color of the shell is pale brown, with fine close lines of chestnut-brown, and one or two paler bands. The shoulder ( = the angulation of the shell whorls) is somewhat obtuse. The spire is concavely elevated, with an acute apex. The spire is uniform pale brown. George Washington Tryon, Manual of Conchology vol. VI, p. 51; 1879 (described as ''Conus lignarius'') Tryon describes the variety ''furvus'' with this special characteristics. The revolving lines are broken up into minute dots The form is somewhat narrower. Some of the spire whorls are finely beaded.

File:Calibanus furvus aegrotus 01.jpg, forma ''aegrotus'' File:Calibanus furvus lignarius 01.JPG, forma ''lignarius''

Distribution

This is an

Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

species. The

type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (disambiguation) * Locality (disambiguation) {{disambiguation ...

is Port Sacloban, Leyte Island in the Philippines. The species occurs along the

Andaman Islands The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between th ...

, Malaysia, Indonesia, Papua New Guinea and from the Philippines to

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It is also found in the South China Sea.

References

*
Conus lignarius
'' - Some information on this species * Filmer R.M. (2001). ''A Catalogue of Nomenclature and Taxonomy in the Living Conidae 1758 - 1998''. Backhuys Publishers, Leiden. 388pp. * Tucker J.K. (2009). ''Recent cone species database''. September 4, 2009 Edition * Tucker J.K. & Tenorio M.J. (2009) ''Systematic classification of Recent and fossil conoidean gastropods''. Hackenheim: Conchbooks. 296 pp
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: 1-23

External links

The Conus biodiversity website
*
Cone Shells - Knights of the Sea

Gallery

File:Conus furvus 2.jpg, ''Conus furvus'' Reeve, L.A., 1843 File:Conus furvus 3.jpg, ''Conus furvus'' Reeve, L.A., 1843 File:Conus furvus 4.jpg, ''Conus furvus'' Reeve, L.A., 1843 File:Conus furvus 5.jpg, ''Conus furvus'' Reeve, L.A., 1843 {{Taxonbar, from=Q27992946 furvus Molluscs of the Indian Ocean Molluscs of the Pacific Ocean Gastropods described in 1843 Taxa named by Lovell Augustus Reeve