Dilemma inexpectatum (Crozier, 1966) Length 8mm, Width 2.7mm Marine, Native - Endemic West Norfolk Ridge, Three Kings Islands and South Cavalli Seamount, from 805-1260m |
Poromya laevis Dell, 1995 Width 10mm, Height 6.5mm Marine, Recent, Fossil, Native - Non-endemic Three Kings Islands. Also East of Cape York, North Australia, from 427-805m |
Poromya microsculpta Dell, 1995 Width 16.2mm, Height 12.2mm Marine, Native - Endemic North-eastern South Island, from 939-1019m |
Poromya neozelanica (Dell, 1956) Width 11mm, Height 8mm Marine, Native - Endemic Ranfurly Bank and off Otago Peninsula, from 94-555m |
Poromya undosa Hedley & Petterd, 1909 Width 5.8mm, Height 5mm Marine Three Kings Islands, and north-eastern North Island as far south-east as Ranfurly Bank, from 327-750m |