original description
Turton, W. H. (1932). The marine shells of Port Alfred S. Africa. Humphrey Milford, London. pp. i-xvi, 1-331, pls 1-70. [published 22 Dec. 1932].
page(s): 144, pl. 32, sp. 1029. [details]
From editor or global species database
Taxonomic remark The original author stated that it is a variety of R. calia "It might easily be taken for a different species, but they grade together" [details]
From editor or global species database