''Aforia goodei'', common name Goode's turrid, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Turridae Turridae is a taxonomic family name for a number of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. MolluscaBase (2018). Turridae H. Adams & A. Adams, 1853 (1838). Accessed through: World Register of Marine Specie ...

, the turrids.

Description

The length of the shell varies between 50 mm and 90 mm. (Original description) The shell is large and thin. Its color is white, with a tinge of pale orange in the throat and on the columella. It contains eight (or more)

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s, the

protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ...

wanting in the specimens. The surface is generally slightly eroded, glistening when perfect. The spiral

sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...

below the periphery consists of narrow shallow grooves separating wider, half obsolete threads. At the periphery is an obtuse carina which is sharper on the early whorls. Behind this is a wide shallow sulcus, behind which the whorl rounds to the distinct but unchannelled suture. On the upper or posterior part of the whorl the fine spirals are perceptible but fainter than in front of the periphery. The transverse sculpture consists only of incremental lines. The

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An opt ...

is elongated moderately wide. The anal notch is wide and rounded. The fasciole is slightly raised, not strongly differentiated. The body of the shell has a thin transparent glaze. The columella is strong, obliquely truncate, flaring, almost pervious, anteriorly more or less tinged with pale orange. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

is long, thin, shallow and slightly recurved. The outer lip is prominent below the periphery, thin and sharp. The operculum has an apical nucleus but the succeeding growth showing a tendency to a slight spirality. With subsequent growth this becomes enclosed by additions made all around the margin, and the adult operculum appears buccinoid, having a buccinoid outline, in the lower right hand part of which the nuclear part is inclosed. This singular form of operculum is not a deformity, but is common to several of the species of ''

Leucosyrinx ''Leucosyrinx'' is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.WoRMS (2011). Leucosyrinx Dall, 1889. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails ...

'' in which the author has been able to examine this appendage. It is a feature which by gradual stages, represented by different species, approaches the normal Pleurotomoid operculum. Dall W. H. 1890. Scientific results of explorations by the U.S. Fish Commission Steamer "Albatross". No. VII. Preliminary report on the collection of Mollusca and Brachiopoda obtained in 1887–88. Proceedings of the United States National Museum 12 (773): 219–362, pls. 5–14
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Distribution

This species occurs in the Pacific Ocean from

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

References

External links

* {{DEFAULTSORT:Aforia Goodei goodei Gastropods described in 1881