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nominal species Unio ryckholtii Malzine, 1867

Unio ryckholtii Malzine, 1867 = Unio crassus

Malzine, 1867. Essai faun. malac. Belg.: 32, pl. 2, figs. 1-2.

Taxonomic Opinions

+ Unio batavus Maton et Rackett — Germain, 1931: 728.

= Unio (Batavusiana) ryckholtii Malzine, 1867 — Germain, 1904: 262.

= Unio (Groupe de l’U. batavus) ryckholti Malzine — Locard, 1893: 172.

= Unio batavus var. ryckholtii Malzine, 1867 — Westerlund, 1890: 76.

= Unio (Ellipsopsisiana) ryckholtii Malzine — Locard, 1889: 140.

= Unio (Groupe de l’U. Batavus) ryckholti Malzine — Locard, 1882: 289.

+ — Lea, 1870: 184.

= Unio ryckholtii De Malz. — Colbeau, 1868: 106.

= Unio ryckholtii Nobis — Malzine, 1867: 32, pl. 2, figs. 1-2.