Maoricolpus finlayi is a species of sea snail, a marine gastropod mollusc in the family Turritellidae.[1] It is known to occur only in Spirits Bay, North Island, New Zealand.
Maoricolpus finlayi have stout shells with concave bases. The shells are pale in colour, and have a smal squarish pattern of dots.[2]
The species is Endemic to New Zealand.[1] The holotype was collected from Piwhane / Spirits Bay, at the northern end of the Aupouri Peninsula in the Northland Region of New Zealand.