South Island. From Lyttelton Harbour south, under holdfasts & on blades of Durvillaea antarctica & adjacent rocks near low tide level
Marine, Endemic. Green area bordering columellar wall
References and Publications
Raven, J.L., Bracegirdle, S. 2010New Zealand Seashells Visual Guide, Creatus Design, Wellington (p.13)
Spencer, H.G. Sep/2009 Name changes for some common intertidal snails, Poirieria, 34 (p.6)
Spencer, H.G., Marshall, B.A., Waters, J.M. 2009 Systematics and phylogeny of a new cryptic species of Diloma Philippi (Mollusca: Gastropoda: Trochidae) from a novel habitat, the bull kelp holdfast communities of Southern New Zealand, Invertebrate Systematics, 23 (p.21)
Key to Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species.
They have been adopted to give an approxomation of the range of each species within New Zealand.
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island