Eulimella herosae
Encyclopedia
Eulimella herosae is a species
of sea snail
, a marine
gastropod mollusk in the family
Pyramidellidae
, the pyrams and their allies.
The epithet "herosae" refers to Mrs V. Héros of the Muséum national d'histoire naturelle
, Paris, France.
of the shell is blunt. The color of the shell is whitish to light cream, but has a brown stripe at the boundary between the protoconch and the first whorl. The teleoconch consists of five to six flat whorls with a marked suture between them. These whorls may be slightly concave to somewhat turreted. The shell lacks a columella tooth or teeth on the outer lip
. The growthlines are prosocline, i.e. they lean forward (adapically) with respect to the direction of the cone.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....
, a marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
gastropod mollusk in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Pyramidellidae
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs or micromolluscs....
, the pyrams and their allies.
The epithet "herosae" refers to Mrs V. Héros of the Muséum national d'histoire naturelle
Muséum national d'histoire naturelle
The Muséum national d'Histoire naturelle is the National Museum of Natural History in Paris, France.- History :The museum was formally founded on 10 June 1793, during the French Revolution...
, Paris, France.
Description
The size of the slender, conical shell varies between 2.9 mm and 4.3 mm. The apexApex (mollusc)
Apex is an anatomical term for the tip of the mollusc shell of a gastropod, scaphopod, or cephalopod mollusc.-Gastropods:The word "apex" is most often used to mean the tip of the spire of the shell of a gastropod...
of the shell is blunt. The color of the shell is whitish to light cream, but has a brown stripe at the boundary between the protoconch and the first whorl. The teleoconch consists of five to six flat whorls with a marked suture between them. These whorls may be slightly concave to somewhat turreted. The shell lacks a columella tooth or teeth on the outer lip
Lip (gastropod)
In the shell of a gastropod mollusk , the margin of the aperture is called the lip or the peristome. In other words, this is a term used to describe part of gastropod shell anatomy....
. The growthlines are prosocline, i.e. they lean forward (adapically) with respect to the direction of the cone.
Distribution
This species occurs in the following locations:- Cape Verdes at depths between 160 m and 540 m