''Amoria jamrachii'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Volutidae Volutidae, common name volutes, are a taxonomic family of predatory sea snails that range in size from 9 mm to over 500 mm. They are marine gastropod mollusks. Most of the species have no operculum. Distribution This family of sea s ...

, the volutes. It was named after

Charles Jamrach Charles Jamrach (born Johann Christian Carl Jamrach; March 1815 – 6 September 1891) was a leading dealer in wildlife, birds and shells in 19th-century London. He owned an exotic pet store on the Ratcliffe Highway in east London – at the time ...

, an animal dealer in London, by Dr.

John Edward Gray John Edward Gray (12 February 1800 – 7 March 1875) was a British zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray (1766–1828). The same is used for a z ...

, Keeper of Zoology at the British Museum.

Subspecies

* ''Amoria jamrachi condei'' Bail & Limpus, 2001 * ''Amoria jamrachi jamrachi'' Gray, 1864: represented as ''Amoria jamrachii'' Gray, 1864 (alternate representation)

Description

The length of the shell varies between 45 mm and 70 mm. (Original description) This species closely resembles ''Amoria turneri'', however, it exhibits several key differences. The shell is thinner, the stripes are narrower and more widely spaced, and the sutural spots are either very small or entirely absent. The shell is oblong-ovate, whitish, and tinged with fulvous. It is longitudinally striated with brown. The spire is conical and acute, but relatively short, with channeled sutures. The aperture is relatively wide and dilated towards the base. The columella exhibits four folds, and the lip is relatively sharp.

Distribution

This marine species occurs off

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

and

Northwest Australia The North West, North West Coast, North Western Australia and North West Australia, are usually informal names for the northern regions of the State of Western Australia. However, some conceptions of "North West Australia" have included adjoi ...

References

* Bail P. & Limpus A. (2001) ''The genus Amoria''. In: G.T. Poppe & K. Groh (eds) A conchological iconography. Hackenheim: Conchbooks. 50 pp., 93 pls.

External links

* Volutidae Gastropods described in 1864 Taxa named by John Edward Gray {{Volutidae-stub