Cryptogemma Explained

Cryptogemma is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.

Distribution

These are deep-sea species with a wide geographic distribution.

Species

According to Zaccharias et al. (2020) this genus should only include:

• Cryptogemma aethiopica (Thiele, 1925)
• Cryptogemma periscelida (Dall, 1889)
• Cryptogemma phymatias (Watson, 1886)
• Cryptogemma powelli Zaharias, Kantor, Fedosov, Criscione, Hallan, Kano, Bardin & Puillandre, 2020
• Cryptogemma praesignis (Smith, 1895)
• Cryptogemma tessellata (Powell, 1964)
• Cryptogemma timorensis (Tesch, 1915)
• Cryptogemma unilineata (Powell, 1964).

The others should be excluded from this genus because the lack key characters such as the narrow fusiform shell and the well-marked peripheral anal sinus. They show closer resemblances to other conoidean families (such as Horaiclavidae) than to Turridae.^[1]

Species within the genus Cryptogemma include (according to WoRMS):

• Cryptogemma aethiopica (Thiele, 1925)
• Cryptogemma calypso Dall, 1919
• Cryptogemma chilensis (Berry, 1968)
• Cryptogemma chrysothemis Dall, 1919
• Cryptogemma cornea (Okutani, 1966)
• Cryptogemma eldorana (Dall, 1908)
• Cryptogemma japonica (Okutani, 1964)
• Cryptogemma longicostata Sysoev & Kantor, 1986
• Cryptogemma oregonensis Dall, 1919
• Cryptogemma periscelida (Dall, 1889)
• Cryptogemma phymatias (Watson, 1886)
• Cryptogemma polystephanus (Dall, 1908)
• Cryptogemma powelli Zaharias, Kantor, Fedosov, Criscione, Hallan, Kano, Bardin & Puillandre, 2020
• Cryptogemma praesignis (E. A. Smith, 1895)
• Cryptogemma quentinensis Dall, 1919
• Cryptogemma tessellata (Powell, 1967)
• Cryptogemma timorensis (Tesch, 1915)
• Cryptogemma unilineata (Powell, 1967)

Species brought into synonymy:

• Cryptogemma adrastia Dall, 1919: synonym of Carinoturris adrastia (Dall, 1919) (original combination)
• Cryptogemma antigone Dall, 1919: synonym of Antiplanes antigone (Dall, 1919) (original combination)
• Cryptogemma benthima (Dall, 1908): synonym of Cryptogemma phymatias (R. B. Watson, 1886)
• Cryptogemma eidola Dall, W.H., 1919: synonym of Borsonella callicesta (Dall, 1902)
• Cryptogemma polycaste Dall, 1919: synonym of Carinoturris polycaste (Dall, 1919) (original combination)

References

• Haas F. (1949). On some deepsea mollusks from Bermuda. Buttletí de la Institució Calalana d'Història Natural 37: 69-73
• MacNeil F. S. (1961 ["1960"]) Tertiary and Quaternary Gastropoda of Okinawa. United States Geological Survey Professional Paper 339: iv + 148 pp., 21 pls

External links

• Dall W.H. (1918). Notes on the nomenclature of the mollusks of the family Turritidae. Proceedings of the United States National Museum. 54: 313-333
• Thiele J. (1925). Gastropoden der Deutschen Tiefsee-Expedition. II Teil. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899. 17(2): 35-382, pls 13-46
• Bouchet, P.; Kantor, Y. I.; Sysoev, A.; Puillandre, N. (2011). A new operational classification of the Conoidea (Gastropoda). Journal of Molluscan Studies. 77(3): 273-308
• Tucker . J.K. . 2004 . Catalog of recent and fossil turrids (Mollusca: Gastropoda) . PDF . Zootaxa . 682 . 1–1295 .

Notes and References

1. • Zaharias P., Kantor Y.I., Fedosov A.E., Criscione F., Hallan A., Kano Y., Bardin J. & Puillandre N. (2020). Just the once will not hurt: DNA suggests species lumping over two oceans in deep-sea snails (Cryptogemma). Zoological Journal of the Linnean Society. DOI: 10.1093/zoolinnean/zlaa010/5802562