Siphonaria sowerbyi H. Adams & A. Adams, 1855

Introduced by H. Adams & A. Adams (1855 [in 1853– 1858]: 271) as a replacement name for S. radiata Sowerby I, 1835, this name is permanently invalid as it is an objective junior homonym of S. sowerbyi Michelin, 1832 (Art. 52.2 of the Code).