Inodrillia aepynota

Inodrillia aepynota is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.[2]

Inodrillia aepynota
Original image of a shell of Inodrillia aepynota
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Horaiclavidae
Genus: Inodrillia
Species:
I. aepynota
Binomial name
Inodrillia aepynota
(Dall, 1889)
Synonyms[1]

Drillia (Cymatosyrinx) aepynota Dall, 1889

It was previously included within the family Turridae.[1]

Fossils have been found in Quaternary strata of Florida, USA; age range: 2.588 to 0.781 Ma

Description

The length of the shell attains 15 mm.

(Original description) The short, stout shell has a smooth rounded whitish inflated protoconch of two whorls and eight subsequent whorls. The color of the shell is whitish or pale madder brown. The spiral sculpture consists of obsolete spiral striae, generally a little wavy, and often absent from a part or the whole of the shell. They are strongest on the base, but are generally so faint as not to interrupt the apparent smoothness of the surface nor to be perceptible without a lens. The suture is appressed, undulated over the ribs. The fasciole is narrow, excavated, smooth except for lines of growth and the undulations due to the ribbing. The transverse sculpture consists of rather faint growth lines and of (on the body whorl 12) strong, stout rounded ribs, strongest in front of the fasciole where they end bluntly, extending across the whorl and disappearing only on the siphonal canal. The interspaces are about equal to the ribs, which are slightly obliquely set. The varix is large, stout and simple. The outer lip in front of it is thin, arched, not internally lirate. The aperture is rather narrow. The notch is subcircular. The inner lip and the columella show an elevated rather thick callus. The columella is concave. The siphonal canal is short, distinct, deep, curved to the right in the adult. The siphonal fasciole is distinct.[3]

Distribution

This marine species occurs from North Carolina, USA, to Puerto Rico.

References
  1. Inodrillia aepynota (Dall, 1889). Retrieved through: World Register of Marine Species on 4 April 2010.
  2. "ITIS Standard Report Page: Inodrillia aepynota". www.itis.gov. Retrieved 14 September 2015.
  3. Dall W.H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877–78) and in the Caribbean Sea (1879–80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College, 18: 1–492, pls. 10–40
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