Monstrotyphis montfortii (A. Adams, 1863) Height 9.1mm Marine Northern Japan, Philippine Islands, Natal and Transkei, South Africa, and northern New Zealand, living at 50-200 metres A |
Monstrotyphis pauperis (Mestayer, 1916) Height 10mm, Width 6mm Marine, Endemic Northland to Bay of Plenty AE. |
Monstrotyphis tangaroa B.A. Marshall & Houart, 2012 Height 7.9mm Marine, Endemic Northern New Zealand, 63-622 metres AE. |
Siphonochelus solus Vella, 1961 Height 8mm, Width 4mm Marine, Endemic Western and north-eastern North Island and north-western South Island, 178-1029 metres ACE. |