Insertae sedis

Kantor, Yu. I., Fedosov, A. E., Puillandre, N., Bonillo, C. & Bouchet, P., 2017, Returning to the roots: morphology, molecular phylogeny and classification of the Olivoidea (Gastropoda: Neogastropoda), Zoological Journal of the Linnean Society 180, pp. 493-541 : 529

Insertae sedis

GENUS OLIVANCILLARIA D’ ORBIGNY, 1841 (IN 1834–1847) (2).

Type species: Oliva auricularia Lamarck, 1811 ; M.

Synonyms

Scaphula Swainson, 1840 [preoccupied by Scaphula Benson, 1834 ( Bivalvia )]. Type species: Oliva patula G.B. Sowerby I, 1825 ; M.

Olivancillaria (Lintricula) H. Adams & A. Adams, 1853 (nov. pro Scaphula Swainson, 1840 , non Benson, 1834). Type species: Oliva patula G.B. Sowerby I, 1825 ; by typification of replaced name.

Claneophila Gray, 1858 . Type species: † Oliva claneophila Duclos, 1835 ; by tautonymy. [ Gray (1858: 48) listed Oliva claneophila in the synonymy of Claneophila gibbosa . Although it is not clear which species he meant under the name gibbosa , since no authorship or date was provided, the remaining species attributed by Gray to Claneophila , beside O. claneophila itself, are species of Olivancillaria ].

Remarks: The position of Olivancillaria remains unclear. We did not have access to molecular material and therefore the genus is not included in our analysis. In their revision of Olivancillaria in the south-western Atlantic, Teso & Pastorino (2011) briefly considered similarities and differences with other genera of Olivoidea and suggested affinities to Agaronia . Marcus & Marcus (1959) described the anatomy of two species, O. vesica (as Lintricula auricularia ) and O. urceus (as O. brasiliensis ). The radular characters of all examined species are similar to that of Agaronia in having rachidian teeth with three large cusps and smaller additional cusp exterior to the main lateral cusp on each side of the tooth ( Fig. 11E), a character not found in Olivinae . Besides, the head has flaps without eyes and tentacles, similar to the situation in Agaronia . Based on the description of Marcus & Marcus (1959), Golikov & Starobogatov (1975) erected the new family Olivancillariidae , remarking the differences in shell and radulae as well as in some details of the female reproductive system, which however are not very clearly described by Marcus & Marcus. Despite a radula similar to that in Agaronia , Olivancillaria lacks the olivoid groove and anterior mantle tentacle. Molecular data will be crucial to clarify the position of Olivancillaria and, although morphologically and conchologically it is close to Olivinae , it may prove to form a distinct lineage, consistent with the recognition of a separate subfamily.