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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.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
FW =
Freshwater
L =
Land
N =
North Island
S =
South Island
E =
Endemic
I =
Introduced

Diacria trispinosa (Blainville, 1821)

Classification:Gastropoda - Opisthobranchia - Thecosomata
Family:CAVOLINIIDAE
Size/Grows to:Height 7mm, Width 6.3mm
Distribution:Off Three Kings Islands to Bay of Plenty. All seas, especially the Atlantic
Geographical Range:K.ACFMAn
References and Publications:
  • Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.278)
  • Bé, A.W.H., Gilmer, R.W. 1977: A zoogeographic and taxonomic review of Euthecosomatous Pteropoda. In A.T.S. Ramsay (ed.), Oceanic Micropaleontology, Academic Press, London, 1 (p.785)