nominal species Tichogonia chemnitzii ‘Rossmässler’ of Authors

Tichogonia chemnitzii ‘Rossmässler’ of Authors = Dreissena polymorpha

(reference to Tichogonia chemnitzii Rossmässler, 1835)
‘Rossmässler’ of Authors.
Stein, 1850. Schneck. und Muscel. Berlins: 100, pl. 3, fig. 9.
Kobelt, 1872. Jb. Nassau. Ver. Naturk. 25-26: 262, pl. 9, fig. 11.

+ Dreissensia (Groupe du Dr. arnouldi) locardi Bourguignat — Locard, 1893: 162.