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Donax vittatus
''Donax vittatus'', or the banded wedge shell, is a species of bivalve mollusc in the order Veneroida. It is found on beaches in north west Europe buried in the sand on the lower shore.
==Description==
The shells of ''Donax vittatus'' are laterally compressed and grow to long and wide. The valves are delicate and glossy and are found in a wide range of colours including white, yellow, brown, pink and violet. The interior is white, often blotched with violet. The valves are asymmetric and wedge shaped, the anterior end being rounded and longer than the obliquely truncated posterior end. They show a fine sculpturing of transverse and longitudinal grooves and the margin is finely serrated. The annual growth rings can be seen and these are often more deeply pigmented than the rest of the shell There may also be pale radial rays. On the inside of the shell, the muscle scars are indistinct and the oval pallial sinus extends to the middle of the valve. The right valve has two cardinal, one posterior and two lateral teeth. The left valve has two cardinal teeth flanked by one lateral tooth on each side. The fringed mantle and the strong muscular foot are mauve or reddish, and the pair of short, separate siphons are orange.〔(''Donax vittatus'' ) Marine Species Identification Portal. Retrieved 2011-12-12.〕〔(Banded wedge shell - ''Donax vittatus'' ) Marine Life Information Network. Retrieved 2011-12-12.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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