Pseudorhaphitoma sienna is a small sea snail, a marine gastropod mollusk in the family Mangeliidae. Description The length of the shell varies between 6 mm and 10 mm. Distribution This marine genus occurs off Algoa Bay, South Africa and Southern Mozambique References R.N. Kilburn, Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 7. Subfamily Mangeliinae, section 2; Annals of the Natal Museum 34, pp 317 - 367 (1993) External links sienna Gastropods described in 1993