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Libros Libros 1 a 5 de 5 sobre ... three, the outer one rapidly increasing ; surface exhibiting traces of revolving...
" ... three, the outer one rapidly increasing ; surface exhibiting traces of revolving lines when denuded, but usually covered with a dark pigment or epidermis, bristling with rigid hairs which are arranged in close revolving lines ; lines of growth very... "
Report on the Invertebrata of Massachusetts: comprising the Mollusca ... - Página 206
de Augustus Addison Gould, Massachusetts. Zoological and Botanical Survey - 1841 - 373 páginas
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The Canadian Naturalist and Geologist, Volumen 2

1857
...denuded, but usually covered with a dark pigment or epidermis, bristling with rigid hairs, which arc arranged in close revolving lines; lines of growth...direction ; its plane very oblique. Long diameter J- inch, short diameter T'5 inch. Animal has the head slate-colored above, with a darker line along...
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The Canadian Naturalist and Geologist, Volumen 2

1857
...increasing ; surface exhibiting traces of revolving lines when denuded, but usually covered with .;i dark pigment or epidermis, bristling with rigid hairs,...close revolving lines; lines of growth very faint; uperture sub-oval, oblique, its diameter from side to side shorter than in the opposite direction ;...
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Smithsonian Miscellaneous Collections

Smithsonian Institution - 1867 - 85 páginas
...concavity is there more limited by the presence of a sub-angular ridge on the outer whirl ; whirls three, the outer one rapidly increasing ; surface...direction ; its plane very oblique. Long diameter one-fifth inch, short diameter one-fifteenth inch. Animal has the head slate-colored above, with a...
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Smithsonian Miscellaneous Collections, Volúmenes 6-7

Smithsonian Institution - 1867 - 43 páginas
...concavity is there more limited by the presence of a sub-angular ridge on the outer whirl ; whirls three, the outer one rapidly increasing ; surface...direction ; its plane very oblique. Long diameter one-fifth inch, short diameter one-fifteenth inch. Animal has the head slate-colored above, with a...
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Report, Volúmenes 26-27

Indiana. Dept. of Geology and Natural Resources - 1903
...part." 34. PLAXORBIS HIRSUTUS Gould. "Shell small, somewhat transparent, of a brownish yellow color; both sides concave, the left rather more than the...direction; its plane very oblique. Long diameter, one-fifth inch, short diameter, one-fifteenth inch." — WG Binney. This little fresh water univalve...
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