Amoria exoptanda

Amoria exoptanda
Apertural view of a shell of Amoria exoptanda
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Volutidae
Genus:	Amoria
Species:	A. exoptanda
Binomial name
Amoria exoptanda (Reeve, 1849)
Synonyms [1]
Amoria (Amoria) exoptanda(Reeve, 1849) Voluta exoptandaReeve, 1849 (original combination)

Amoria exoptanda, common name the desirable volute, is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes. ^[1]

Description

The length of the shell varies between 85 mm and 110 mm.

(Original description) The shell is cylindrically oblong, somewhat olive-shaped, with a short, conical spire that terminates in an obtusely papillary apex. The whorls are smooth, initially sloping around the upper part, then becoming more swollen before gradually tapering. The columella is strongly four-plaited. The aperture is relatively narrow, and the outer lip is only slightly thickened.

The shell exhibits a pale rose-orange coloration, adorned with two faint bands. Densely distributed throughout the shell are sharply waved, fine chestnut-red lines. The columella and the interior of the aperture are a rich orange-carnelian color. ^[2]

Distribution

This marine species is endemic to Australia and occurs off South Australia and Western Australia.

References

1. Amoria exoptanda (Reeve, 1849) . Retrieved through: World Register of Marine Species  on 6 November 2012.
2. Reeve, L.A. (1849). Monograph of the genus Voluta. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 6, pls 1-22 and unpaginated text. London: L. Reeve & Co. Retrieved 2 February 2025. This article incorporates text from this source, which is in the public domain .

• Weaver, C.S. & du Pont, J.E. 1970. Living Volutes - A Monograph of the Recent Volutidae of the World. Monograph Series No. 1. Greenville Delaware : Delaware Museum of Natural History pp. 1–375.
• Wilson, B. 1994. Australian marine shells. Prosobranch gastropods. Kallaroo, WA : Odyssey Publishing Vol. 2 370 pp.
• Wilson, B.R. & Gillett, K. 1971. Australian shells: illustrating and describing 600 species of marine gastropods found in Australian waters. Sydney : Reed Books 168 pp.
• Bail P. & Limpus A. (2001) The genus Amoria. In: G.T. Poppe & K. Groh (eds) A conchological iconography. Hackenheim: Conchbooks. 50 pp., 93 pls.
• Morrison H.M. & Schneider B. (2021). "Description of two overlooked species of Amoria (Gastropoda, Volutidae) from the southern coast of Western Australia". Conchylia. 51 (3–4): 78–79.
• Darragh, T.A. (2024). "A checklist of Australian marine Cenozoic Mollusca". Memoirs of Museum Victoria. 83: 108.
• Poppe, G.T. & Goto, Y. 1992. Volutes. Ancona : L'Informatore Piceno 348 pp., pl. 1-107.

External links

• Darragh, T.A. (1989). "A revision of the Tertiary Volutidae (Mollusca: Gastropoda) of south-eastern Australia". Memoirs of the Museum of Victoria. 49 (2): 229.
• "Amoria exoptanda". Gastropods.com. Retrieved 15 January 2019.