Ferrissia dohrniana (Clessin, 1882) Length 4mm, Width 2.5mm, Height 1.5mm Freshwater Limpet, Freshwater, Native - Endemic North Island, attached to stems and underside of leaves of aquatic plants in quiet waters Fw.N. |
Ferrissia neozelanica (Suter, 1905) Length 3mm, Width 2mm, Height 0.75mm Freshwater Limpet, Freshwater, Native - Endemic South Island Fw.S. |
Glyptophysa oconnori (Cumber, 1941) Height 19mm, Width 10mm Freshwater, Native - Endemic, Sinistral South Island. North Canterbury Fw.S. |
Glyptophysa variabilis (Gray, 1843) Height 25mm, Width 15mm Freshwater, Native - Endemic, Sinistral North and South Island Fw.N.S. |
Gyraulus corinna (Gray, 1850) Length 3.6mm, Width 2.6mm, Height 0.8mm Freshwater, Native - Endemic, Four slowly increasing whorls North and South Island Fw.N.S. |
Gyraulus kahuica Finlay & Laws, 1931 Length 6mm, Width 5mm, Height 1.75mm Freshwater, Native - Endemic, Much larger than G.corinna, 3.9-6.0 mm in diameter, yet with only 3-3.5 whorls, which are more accellerated North and South Island Fw.N.S. |
Hippeutis complanatus (Linnaeus, 1758) Width 4mm, Height 1mm Freshwater North Island, New Plymouth Fw.N. |