Descrição original: Clench, W. J. & Aguayo, C. G. (1939). Notes and descriptions of new deep-water Mollusca obtained by the Harvard-Havana expedition off the coast of Cuba II. Memorias de la Sociedad Cubana de Historia Natural ”Felipe Poey”. 13(3): 189-197, pls 28-29. page(s): 190, pl. 28 fig. 2