Cochlespira

Cochlespira is a genus of sea snails, marine gastropod mollusks in the family Cochlespiridae.[2][3]

Cochlespira
Apertural view of a shell of Cochlespira radiata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Cochlespiridae
Genus: Cochlespira
Conrad, 1865 [1]
Type species
Pleurotoma cristata
Conrad, T.A., 1847
Synonyms[2]
  • Coronasyrinx Powell, 1944
  • Pagodasyrinx Shuto, 1969
  • Surcula (Cochlespira)
  • Tahusyrinx Powell, 1942

Description

The species in this genus are characterized by their elongated fusiform spire and a long siphonal canal. The whorls show on their edge spinose projections.[4]

The shell is moderate in size, with a subacute, few whorled, glassy protoconch. It has an elongated slender, straight siphonal canal. The whorls are tabulated by a sharp recurved spinose or beaded keel, between which and the suture the surface is concave, nearly smooth. The anal sulcus is deep, narrow, the fasciole separated from the suture by a beaded ridge, the outer margin of the fasciole not elevated. Type † Pleurotoma cristata Conrad, 1848. Oligocene fossil.

This group is extremely close to Ancistrosyrinx Dall, 1881, the latter differing only by having the anal sulcus at the suture, with no intervening ridge, while the outer margin of the fasciole has an elevated lamella between which and the reflected keel at the shoulder there is an excavated channel. These differences hold good between the Oligocene and the recent forms, so far known, without exception. The recent forms have an operculum like that of Leucosyrinx. [5]

Distribution

Species from this genus occur in very deep water in the Indo-West Pacific and off Australia (Queensland).

Species

Species within the genus Cochlespira include:

References
  1. Conrad, 1865 [American Journal of Conchology, 1(1): 19
  2. Cochlespira Conrad, 1865. Retrieved through: World Register of Marine Species on 29 December 2010.
  3. P. Bouchet; Yu. I. Kantor; A. Sysoev; N. Puillandre (2011). "A new operational classification of the Conoidea (Gastropoda)". Journal of Molluscan Studies. 77 (3): 273–308. doi:10.1093/mollus/eyr017.
  4. Indo-Pacific mollusca; Academy of Natural Sciences of Philadelphia. Delaware Museum of Natural History; v. 2 # 9-10: p. 403
  5. W.H. Dall (1908) Reports on the Mollusca and Brachiopoda, Bulletin of the Museum of Comparative Zoology at Harvard College. vol. 43
  6. Cochlespira beuteli Powell, 1969. Retrieved through: World Register of Marine Species on 16 April 2010.
  7. Cochlespira cedonulli (Reeve, 1843). Retrieved through: World Register of Marine Species on 16 April 2010.
  8. Cochlespira crispulata (Martens, 1901). Retrieved through: World Register of Marine Species on 16 April 2010.
  9. Cochlespira elegans (Dall, 1881). Retrieved through: World Register of Marine Species on 16 April 2010.
  10. Cochlespira elongata Simone, 1999. Retrieved through: World Register of Marine Species on 16 April 2010.
  11. Cossmann M., Essais de Paléoconchologie comparée, 7° livraison, in-8°, Paris, 1906; p.221, pl. XIV, fig. 13
  12. Cochlespira kuroharai (Kuroda, 1959). Retrieved through: World Register of Marine Species on 16 April 2010.
  13. Cochlespira pulchella (Schepman, 1913). Retrieved through: World Register of Marine Species on 16 April 2010.
  14. Cochlespira pulcherrissima (Kira, 1955). Retrieved through: World Register of Marine Species on 16 April 2010.
  15. Cochlespira radiata (Dall, 1889). Retrieved through: World Register of Marine Species on 16 April 2010.
  16. Cochlespira simillima Powell, 1969. Retrieved through: World Register of Marine Species on 16 April 2010.
  17. Cochlespira travancorica (Smith E. A., 1896). Retrieved through: World Register of Marine Species on 16 April 2010.
  18. Cochlespira zanzibarica Sysoev, 1996. Retrieved through: World Register of Marine Species on 16 April 2010.
  • Powell A.W.B. (1942). The New Zealand Recent and fossil Mollusca of the family Turridae with general notes on turrid nomenclature and systematics. Bulletin of the Auckland Institute and Museum. 2: 1-188, 14 pls.
  • Powell, A.W.B. 1966. The molluscan families Speightiidae and Turridae, an evaluation of the valid taxa, both Recent and fossil, with list of characteristic species. Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 5: 1-184, pls 1-23
  • Powell, A.W.B. 1969. The family Turridae in the Indo-Pacific. Part. 2. The subfamily Turriculinae. Indo-Pacific Mollusca 2(10): 207-415, pls 188-324
  • Long, D.C. 1981. Late Eocene and early Oligocene Turridae (Gastropoda: Prosobranchiata) of the Brown's Creek and Glen Aire Clays, Victoria, Australia. Memoirs of the National Museum of Victoria 42: 15-55
  • Wilson, B. 1994. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, WA : Odyssey Publishing Vol. 2 370 pp.
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