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Vombsjön, Skåne, Sverige
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Salten Sø
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Long solid, Quadrula subrotunda (Lea), from Cumberland River.
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Section of shell of Unio (A). Horizontal shell of Pinna, showing the hexagonal prisms (B)
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Pink heel-splitter, Lampsilis alata (Say), from Mississippi River, Upper left and middle right; White heel-splitter, Symphynota complanata (Barnes), from Kankakee River, lower left and lower right.
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Lake Pepin mucket, Lampsilis luteola (Lamarck), upper; Yellow sand-shell, Lampsilis anodontoides (Lea), middle; Pocketbook, Lampsilis ventricosa (Barnes), lower.
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Rear view of Anodonta corpulenta showing siphonal openings. Note the very smooth margins of the upper exhalent opening and the fimbriae or feelers protecting the lower or inhalent opening.
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Unio pictorum (Linnaeus).
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Bullhead (Pleurobema aesopus). Warty-Back (Quadrula pustulosa). Butterfly (Plagiola securis). Outside and inside views.
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Grandma, Lampsilis ovata (Say), from Cumberland River, upper; Pocketbook, Lampsilis capax (Green), from Mississippi River, lower.
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