Work found, with species-group names introduced therein:
Aguayo, C. G. 1935. Espicilegio de moluscos cubanos. Memorias de la Sociedad Cubana de Historia Natural 9 107-128, pl. 9. [Stated date: -- Jul 1935; true date: pre 31 July.] Triphora triserialis clenchi, see Inella intermedia (Dall, 1881)