Profil taxonu
Obrázky
Autor: Bartsch, P.
Popis
AS Atrina alfredensis Bartsch
Shell depressed pyriform; horn colored, darker at the tip. The interior is dull horn colored, excepting the tip, which is smoky pearly. Upper side slightly curved; the ventral edge decidedly concave; posterior portion decidedly expanded. The surface is marked with five poorly developed and poorly expressed radiating ridges beset with decidedly elevated squamations, which are strongest on the three median ridges. The ventral border is rendered rasp-like by fine poorly developed squamations.
The type and another specimen, Cat. No. 227815, U.S.N.M., come from Port Alfred (Coll. No. 910). The type measures: Length, 73 mm.; greater diameter, 50 mm.
Shell depressed pyriform; horn colored, darker at the tip. The interior is dull horn colored, excepting the tip, which is smoky pearly. Upper side slightly curved; the ventral edge decidedly concave; posterior portion decidedly expanded. The surface is marked with five poorly developed and poorly expressed radiating ridges beset with decidedly elevated squamations, which are strongest on the three median ridges. The ventral border is rendered rasp-like by fine poorly developed squamations.
The type and another specimen, Cat. No. 227815, U.S.N.M., come from Port Alfred (Coll. No. 910). The type measures: Length, 73 mm.; greater diameter, 50 mm.
Bartsch, P., 1915. Report on the Turton Collection of South African marine mollusks, with additional notes on other South African shells contained in the United States National Museum.
Autor: Jan Delsing
Odkazy a literatura
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Atrina squamifera Sowerby, 1835]Datum citace: 23. listopad 2013