Megistostoma striatum Gabb, 1864

Cunha, Carlo M. & Salvador, Rodrigo B., 2018, Type specimens of fossil " Architectibranchia " and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia, Zoosystematics and Evolution 94 (2), pp. 505-527 : 505

Megistostoma striatum Gabb, 1864

Megistostoma striata [sic] Gabb, 1864: 144, 229, pl. 21, fig. 108.

Type locality.

Martinez, California, USA; stratum: uncertain; age: Eocene.

Type material.

Syntypes, ANSP IP4216 (lost), 2 shells ( Stewart 1926: 442: pl. 26, fig. 2; as “holotype” and “paratype” in Keen and Bentson 1944: 170; as “holotypes” in Richards 1968: 191).

Remarks.

Type species of Megistostoma Gabb, 1864. The correct epithet is striatum (not striata ), since the ending -stoma is neuter.

Current taxonomic status.

Philine (Megistostoma) gabbiana (Stoliczka, 1868) ( Keen and Bentson 1944), new name for M. striatum Gabb, 1864 (see above).