Cymatosyrinx johnsoni

Cymatosyrinx johnsoni
Shell of Cymatosyrinx johnsoni (holotype)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Drilliidae
Genus:	Cymatosyrinx
Species:	C. johnsoni
Binomial name
Cymatosyrinx johnsoni Arnold, 1903
Synonyms [1]
Drillia johnsoniR. Arnold, 1903

Cymatosyrinx johnsoni is a species of sea snail, a marine gastropod mollusk in the family Drilliidae. ^[1]

Description

The length of the shell attains 32 mm, its diameter 11 mm

(Original description) This medium-sized, turreted shell comprises eight or nine nearly flat whorls. Each whorl is adorned with approximately thirteen prominent, rounded, and equally spaced oblique ribs, which originate from the anterior and extend two-thirds across the whorl before becoming nearly obsolete. A distinct sutural band occupies the upper third of each whorl, while the lower portion features five deep, channel-like sulcations (channel-like depression on the surface of the shell). The sutural band itself is marked by strong, oblique incremental lines, and the suture is appressed and undulating.

The aperture is subelliptical with an arcuate outer lip. It presents a narrow, rather deep posterior sinus and a short, recurved anterior sinus. The columella is incrusted. The convex body whorl extends downward, exhibiting revolving sulcations on its lower part, where transverse ridges are obsolete. ^[2]

Distribution

This species occurs in the Western Atlantic Ocean.

References

1. Rosenberg, G. (2015). Cymatosyrinx johnsoni. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581084 on 22 August 2016
2. Arnold, R. (1903). "The paleontology and stratigraphy of the marine Pliocene and Pleistocene of San Pedro, California". Memoirs of the California Academy of Sciences. 3: 206. Retrieved 18 September 2025. This article incorporates text from this source, which is in the public domain .

• Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN   1-888569-01-8. IX, 526 + cd-rom pp.