Maoricolpus, the New Zealand screw shells, is a genus of sea snails, marine gastropod molluscs in the family Turritellidae, the Turritella snails. It is found in New Zealand and Australia. Species and subspecies Species and subspecies in the genus Maoricolpus include: Maoricolpus finlayi Powell, 1940 Maoricolpus roseus (Quoy and Gaimard, 1834) Subspecies Maoricolpus roseus manukauensis Powell, 1931… (More on Maoricolpus)