Etimologia: homenagem a Stewart Henry Jadis (1908-1987), malacologista panamenho.
Descrição original: Olsson, A. A. & McGinty, T. L. (1958). Recent marine mollusks from the Caribbean Coast of Panama with the description of some new genera and species. Bulletins of American Paleontology. 39(177): 1-58, pls. 1-5., available online at https://www.biodiversitylibrary.org/page/10645693page(s): 43, pl. 1 fig. 11, 11a