Marshall, B.A., Barker, G.M. 2007 A revision of New Zealand landsnails of the genus Cytora Kobelt & Möllendorff, 1987 (Mollusca: Gastropoda: Pupinidae), Tuhinga: Records of the Museum of New Zealand Te Papa Tongarewa, 18 (p.102)
Powell, A.W.B. 1979New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.86)
Powell, A.W.B. 1948 Land Mollusca of the Three Kings Islands, Records of the Auckland Institute and Museum, 3 (p.274)
Powell, A.W.B. 1935 Land Mollusca of the Three Kings Islands, New Zealand., Proceedings of the Malacological Society of London, 21 (p.244) Original Description
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 approximation 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