Diaugasma Explained

Diaugasma is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.

Description

The minute shell is oliviform, smoother microscopically spirally striolate, mainly on each side of the sutures, leaving the central portion of the whorl plain, in form cylindrical or elongate, compact, only slightlyimpressed at the sutures. The whorls of the protoconch are closely and very finely cancellate. The whorls are semi-pellucid, unicolorous white, or flecked with pale stramineous. The aperture is narrowly oblong. The outer lip is nearly straight, slightly thickened,. The sinus is hardly expressed.^[1]

Species

Species within the genus Diaugasma include:

• Diaugasma epicharta (Melvill & Standen, 1903)
• Diaugasma olyra (Reeve, 1845)

Species brought into synonymy:

• Diaugasma marchadi (Knudsen, 1956): synonym of Kyllinia marchadi (Knudsen, 1956)

External links

• Melvill J.C. & Standen R. (1903). Descriptions of sixty-eight new Gastropoda from the Persian Gulf, Gulf of Oman, and North Arabian Sea, dredged by the Indo-European Telegraph Service, 1901–1903. Annals and Magazine of Natural History. ser. 7, 12: 289-324
• Rolán E., Otero-Schmitt J. & Fernandes F. (1998) The family Turridae s. l. (Mollusca, Neogastropoda) in Angola (West Africa). 1. Subfamily Daphnellinae. Iberus, 16: 95–118
• Worldwide Mollusc Species Data Base: Raphitomidae

Notes and References

1. https://archive.org/details/proceedingsofmal1213191619mala J.C. Melvill (1917), A revision of the Turridae (Pleurotomidae) occurring in the Persian Gulf, Gulf of Oman and North Arabian Sea, as evidenced mostly through the results of dredgings carried out by Mr. F. W. Townsend, 1893-1914; Proceedings of the Malacological Society of London vol. 12, 1917