Theodoxus schultzii (Grimm, 1877)

*1877 Neritina Schultzii Grimm: 77-78, pl. 7, fig. 5, pl. 8, fig. 16.

1909 Neritina ( Ninnia) Schultzei [sic] Grimm. - Andrusov: 106-107, pl. 6, fig. 38.

?1947 Theodoxus (Ninnia) schultzi [sic] var. jukovi Kolesnikov: 106, 110.

1950 Theodoxus (Ninnia) schultzei [sic] (Grimm). - Kolesnikov: 215-216, pl. 26, figs 12, 13.

1969 Theodoxus schultzi [sic] (Grimm, 1877). - Logvinenko and Starobogatov: 344, fig. 357.

?1974 Theodoxus zhukovi [sic] Kolesnikov, 1947. - Starobogatov: 255, text fig. 223.

2007 Theodoxus (Theodoxus) schultzii (Grimm, 1877). - Zettler: 249, figs 2-5.

2016 Theodoxus (Theodoxus) schultzii (Grimm, 1877). - Vinarski and Kantor: 157.

Status. Pontocaspian species, status uncertain.

Type locality. Caspian Sea, in two localities, given by Grimm (1877) as 43°17'N, 01°03'E, 40 fathoms, and 42°48'N, 01°22'E, 48 fathoms. Since the longitude was calculated relative to the geographic position of Baku, situated approximately at 50E, the correct longitude should be about 51°00'E (Vinarski and Kantor 2016).

Distribution. Middle and southern Caspian Sea basins, between 15 and 100 m (Logvinenko and Starobogatov 1969).

Taxonomic notes. See discussion of T. pallasi for notes on the potential synonymy with T. major Issel, 1865. The status of T. jukovi still requires confirmation (Vinarski and Kantor 2016).

Conservation status. Not assessed.