Pseudoliva, SWAINSON, 1840

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 : 533

GENUS PSEUDOLIVA SWAINSON, 1840 (1)

Type species: Buccinum plumbeum Dillwyn, 1817 (= Buccinum crassum Gmelin, 1791 ); OD.

Synonyms

Mariona G.B. Sowerby III, 1890 . Type species: Pseudoliva ancilla Hanley, 1859 ; M.

Sylvanocochlis Melvill, 1903 . Type species: Pseudoliva ancilla Hanley, 1859 ; OD; Invalid: junior objective synonym of Mariona .

Fulmentum P. Fischer, 1884 . Type species: Buccinum sepimentum Rang, 1832 ; M.

Remarks: Besides size, the distinction between Pseudoliva and Fulmentum is in the better development of the plate-like parietal ridge ( Fig. 5M), which divides the aperture of Fulmentum into two compartments; however, a similar, although weaker, plate is also present in the type species of Pseudoliva . Pseudoliva sepimenta and P. crassa have rather similar and characteristic bicuspid lateral teeth, differing in this from all other pseudolivids that have unicuspid lateral teeth. We consider the conchological differences insufficient for separation of two genera.