Merelina waitangiensis

In the original description, Powell described the species as follows:

Shell nearest to superba Powell 1927, but differing from that species in having more numerous spiral ridges and fewer axials, which causes the enclosed rectangular interspaces to be more than twice as long as high. Penultimate whorl with thirteen axials. Spire whorls with four to five spirals, body-whorl with nine. In superba there are from three to five spiral ridges on spire whorls and eight on the body-whorl. Post-nuclear whorls 5, protoconch damaged. Spire tall, more than three times height of aperture. Colour uniformly buff. The shells of the species measure 4.4 mm (0.17 in) in height and 1.7 mm (0.067 in) in diameter. It is the largest known species of Merelina found in New Zealand, identifiable by its 4-5 spirals on spire whorls, by having wider than high clathrate interspaces, and due to its uniformly buff colour.

M. waitangiensis is endemic to New Zealand, found in the waters of the Chatham Islands. As of 2026, only two specimens have been recorded, the holotype and a specimen collected by dredging off the coast of Waitangi in 1995, at a depth of 40 m (130 ft).

== References ==