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Volutopsius stefanssoni W. H. Dall, 1919

říše Animalia - živočichové »  kmen Mollusca - měkkýši »  třída Gastropoda - plži »  řád Neogastropoda »  čeleď Buccinidae - surmovkovití »  rod Volutopsius - surmovka

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Volutopsius stefanssoni

Autor: Dall, W.H.

Volutopsius stefanssoni

Autor: Dall, W.H.

Volutopsius stefanssoni

Autor: Mclean, J. H. & Clark, R. N.

Taxon v check-listech zemí*

Arktida, Severní Amerika: Aljaška

* Výčet zemí nemusí být kompletní

EN  

Popis

Shell large, heavy, rude, pinkish brown with a rosy protoconch and five rapidly enlarging whorls; nucleus swollen, large, irregular, of about two whorls, blunt at the apex; suture distinct, not channelled; whorls inflated, with a high rounded shoulder and five or six obscure swellings at the shoulder which do not-become definite ribs; there is no spiral sculpture, but the lines of growth are rude and occasionally lamellose, especially toward the aperture in senile individuals; canal short, wide, slightly recurved; aperture wide, the outer lip thickened but hardly reflected, throat whitish; body in the mature shell with a layer of whitish enamel which extends to the end of the pillar, which is arcuate, shorter than the aperture and obliquely truncate in front. Height of shell 114; max. diameter 65; height of last whorl 87; of aperture 75 mm.
Dall W.H. (1919). The Mollusca of the Arctic coast of America collected by the Canadian Arctic expedition west from Bathurst Inlet with an appended report on a collection of Pleistocene fossil Mollusca.

Možné záměny

The species in a general way recalls V. castanea Morch, a much smaller species common on the Aleutian islands.
Dall W.H. (1919). The Mollusca of the Arctic coast of America collected by the Canadian Arctic expedition west from Bathurst Inlet with an appended report on a collection of Pleistocene fossil Mollusca.

Rozšíření

Point Barrow, Alaska, sandspit.
Dall W.H. (1919). The Mollusca of the Arctic coast of America collected by the Canadian Arctic expedition west from Bathurst Inlet with an appended report on a collection of Pleistocene fossil Mollusca.

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