Amalda (Baryspira) australis (G.B. Sowerby I, 1830) Height 40mm, Width 18mm, Southern Olive. Marine, Endemic. Often found on sandy flats in harbours North Island and northern part of South Island down to Banks Peninsula. From low tide to about 20 metres, in sand ACE.
Amalda (Baryspira) bathamae (Dell, 1956) (=bathami Dell) Height 37mm, Width 19mm, Marine, Endemic Off eastern Otago, South Island, and off subantarctic islands FAnE.
Amalda (Baryspira) depressa (G.B. Sowerby II, 1859) Height 20mm, Width 12mm, Olive. Marine, Endemic North Island and northern part of South Island ACE.
Amalda (Baryspira) mucronata (G.B. Sowerby I, 1830) Height 61mm, Width 26mm, Olive. Marine, Endemic. Narrower and paler in colouration than A.australis North Island and northern part of South Island from low water to approx. 450 metres ACE.
Amalda (Baryspira) raoulensis Powell, 1967 Height 56mm, Marine, Endemic Kermadec Islands to Colville Ridge, north of NZ. Dead specimens washed up on beaches, and to 274 metres KAE.
Amalda (Gracilispira) novaezelandiae (G.B. Sowerby II, 1859) (=crystallina Brookes) Height 15mm, Width 6mm, Olive. Marine, Endemic North Island and north part of South Island, and Chatham Rise, from shallow water to approx. 550 metres ACME.
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