Profil taxonu
Obrázky
Autor: Powell
Popis
Shell minute, white, solid, depressed turbinate. Spire about half height of aperture.
Whorls three, including a typical smooth low convex protoconch of one whorl. Post-nuclear sculpture of indistinct spiral hands marked off by irregularly punctate interstitial grooves. There are about nine spiral bands, indistinct above, the last being situated at about half way across the base. Umbilicus about one-eleventh the maximum width of the shell and around its edge strongly crenulated by axial growth lines. Aperture circular. Peristome continuous, slightly thickened.
Height 0,7 mm., diameter 0,9 mm. (Holotype).
Whorls three, including a typical smooth low convex protoconch of one whorl. Post-nuclear sculpture of indistinct spiral hands marked off by irregularly punctate interstitial grooves. There are about nine spiral bands, indistinct above, the last being situated at about half way across the base. Umbilicus about one-eleventh the maximum width of the shell and around its edge strongly crenulated by axial growth lines. Aperture circular. Peristome continuous, slightly thickened.
Height 0,7 mm., diameter 0,9 mm. (Holotype).
Powell, A.W.B., 1937. New species of marine Mollusca from New Zealand.
Rozšíření
New Zealand. Off Waikuku Reach, near North Cape, St. 930, 29 m.
Powell, A.W.B., 1937. New species of marine Mollusca from New Zealand.
Autor: Jan Delsing
Odkazy a literatura
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Cirsonella waikukuensis Powell, 1937]Datum citace: 22. listopad 2013