Monstrotyphis montfortii (A. Adams, 1863) Height 9.1mm Marine, Native - Non-endemic Japan, Philippine Islands and south-eastern Africa, West Norfolk Ridge, Middlesex Bank and Three Kings Islands, from 113-805m |
Monstrotyphis pauperis (Mestayer, 1916) Height 10mm, Width 6mm Marine, Native - Endemic North-eastern North Island as far south-east as Ranfurly Bank, from 55-207m |
Monstrotyphis tangaroa B.A. Marshall & Houart, 2012 Height 7.9mm Marine, Native - Endemic Middlesex and King Banks, Three Kings Islands, off Cape Reinga, off Spirits Bay and Great Exhibition Bay, from 36-622m |