Olivancillaria
"Animal volumineux, pouvant envelopper toute la coquille. Pied large, arrondi en arrière; bouclier très-large, à lobes obtus, arrondis sur les côtés; tête recouverte par les lobes du pied; le manteau donne naissance en arrière à un lobe large, pouvant embrasser jusqu'à l'extrémité de la spire; point d'opercule. Coquille sans canal sur la spire, au-delà du dernier tour, tout le reste étant encroûté constamment par le dépôt que laisse le lobe du manteau. Le nom que nous avons donné à cette division rappelle à la fois le double rapport qu'ont ces coquilles avec les Olives canaliculées sur la spire et les Ancillaires, qui ne le sont pas du tout.".
Type species by subsequent designation (Marcus & Marcus, 1959): Porphyria urceus Röding, 1798. Marcus & Marcus named Oliva brasiliensis Chemnitz, 1788, as type species of the genus-group taxon, which is an unavailable taxon on which Porphyria urceus was based.
A genus recognised from the warm temperate and cold temperate waters of Brazil, Uruguay and Argentina. Fossil species are recognised from the Miocene of Brazil and Argentina.
The type species is Porphyria urceus Röding, 1798.
The following extant species are recognised:
| Species | Distribution |
|---|---|
| Olivancillaria urceus (Röding, 1798) |
Sumbauma (12°15’S; 37°47’W), Bahia state, Brazil to Puerto Lobos (42°00’S; 65°04’W), San Matías Gulf, Chubut province, Argentina in 0–53 m depth.
RV 7306. Brazil, Sao Paulo, Pereque, trawled offshore, depth 3-4.5 m, sand bottom. Scale bar is 1 cm. |
| Olivancillaria auricularia (Lamarck, 1811) |
Maricá (22°55’S; 42°49’W), Rio de Janeiro state, Brazil to Villarino (42°25’S; 64°31’W), Río Negro province, Argentina in 0–26 m depth.
RV 1997b. Argentina, Villa Gesell, in shallow water on sand. Scale bar is 1 cm. |
| Olivancillaria carcellesi Klappenbach, 1965 | Praia do Forte (12°33'S; 37°59'W), Bahia state, Brazil to Punta Pardelas (42°37'S,64°15'W), Chubut province, Argentina in 0–70 m depth. |
| Olivancillaria contortuplicata (Reeve, 1850) | Imbituba (28°07’S; 48°41’W), Santa Catarina state, Brazil to La Paloma (34°39’S; 54°09’W), Rocha department, Uruguay, usually intertidal. |
| Olivancillaria deshayesiana (Duros de St. Germain, 1857) | Ilha Grande (23°09’S; 44°13’W), Rio de Janeiro state, Brazil to Necochea (38°33’S; 58°44’W), Buenos Aires province, Argentina in 0–60 m depth. |
| Olivancillaria orbignyi (Marrat, 1868) | Niterói (22°58’S; 43°02’W), Rio de Janeiro state, Brazil to Caleta de los Loros (41°33’S;65°02’W), Río Negro province, Argentina in 0–35 m depth. |
| Olivancillaria teaguei Klappenbach, 1964 |
Chuí (33°44’S; 53°21’W), Rio Grande do Sul State, Brazil to La Coronilla (33°53’S;53°30’W), Rocha Department, Uruguay, usually intertidal or in the surf zone.
RV 2002. Brazil, Rio Grade do Sul, Barra do Chui, on sand, shallow water, February 1988. Scale bar is 1 cm. |
| Olivancillaria vesica (Gmelin, 1791) | Iguape (13°34'S; 38°48'W), Bahia state to Florianópolis 27°35'S; 48°33'W), Santa Catarina state, both in Brazil in 0–20 m depth. |
