Agaronia acuminata, common name the pointed ancilla, is a species of sea snail, a marine gastropod mollusk in the family Olividae, the olive snails.
Subspecies Agaronia acuminata acuminata (Lamarck, 1811) Agaronia acuminata boavistensis Burnay & Conceicao, 1986
Description The length of the shell varies between 30 mm and 80 mm.
The smooth and glossy shell is elongate and fusiform, which means it is spindle-shaped, tapering at both ends. The spire is relatively low, compared with the overall length of the shell. The shell exhibits a range of colors: yellowish, fawn, or ash-gray, and features irregular markings, including zigzags and maculations, or is sometimes faintly nebulous with nearly obsolete markings. The suture may have fasciculations and is often reduced to a row of spots, and in some cases, it is entirely unspotted. The fasciole and fasciolar band are typically yellowish or fawn-colored, occasionally exhibiting faint, close-set, orange-red strigations. The columella is white, while the interior of the long and narrow aperture is also white, with chestnut maculations along the border of the sharp outer lip.G.W. Tryon (1883) Manual of Conchology vol. V; Academy of Natural Sciences, Philadelphia
Distribution This species has a widespread distribution in tropical and subtropical marine environments. It occurs in the Atlantic Ocean off Gabon, Angola and West Africa; also off Costa Rica, Pakistan, Sri Lanka, Indonesia and Australia.Agaronia acuminata - occurrence
It is typically found in shallow waters, from the intertidal zone to depths of about 20 meters,
References
Teso V. & Pastorino G. (2011) A revision of the genus Olivancillaria (Mollusca: Olividae) from the southwestern Atlantic. Zootaxa 2889: 1–34 Nolf, F. & Hubrecht, S. (2024). A survey of the genus Agaronia in the West African waters, including the description of a new species. Neptunea. 17(2): 14-40.
External links Lamarck (J.B.M.de). (1811). Suite de la détermination des espèces de Mollusques testacés. Annales du Muséum National d'Histoire Naturelle. 16: 300-328