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Libros Libros 1 a 6 de 6 sobre ... least the half of a revolution ; aperture circular, lip simple and sharp ; on...
" ... least the half of a revolution ; aperture circular, lip simple and sharp ; on looking at the shell from below, no umbilical opening is found; operculum horny, apex central, elements concentric. Length .1, breadth 3-40 inch. Found at Fresh Pond and... "
Report on the Invertebrata of Massachusetts: comprising the Mollusca ... - Página 227
de Augustus Addison Gould, Massachusetts. Zoological and Botanical Survey - 1841 - 373 páginas
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The Canadian Naturalist and Geologist, Volumen 2

1857
...T'j inch, breadth ?3j inch. Found at Fresh I'ond and other ponds, on stones and submerged sticks ; and has been for many years in our cabinets marked as a PALUDI'NA. Animal veiy active ; head proboseidiform, half as long as the tentacles, bi-lobed in front, dark, terminated...
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The Canadian Naturalist and Geologist, Volumen 2

1857
...inch. Found at Fresh Pond and other ponds, on stones and submerged sticks ; and has been for ninny years in our cabinets marked as a PALUDI'NA. Animal very active ; head proboscidiforui, half us long as the tentacles, bi-lobed in front, dark, terminated with light ; tentacles...
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Smithsonian Miscellaneous Collections, Volúmenes 6-7

Smithsonian Institution - 1867 - 43 páginas
...Length .1, breadth 3-40 inch. Found at Fresh Pond and other ponds, on stones and submerged sticks ; and has been for many years in our cabinets marked...black eyes ; foot, tongue-shaped, as long as the first whirl, dilated into two acute angles in front, light drab-color ; respiratory organ occasionally protruded...
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Smithsonian Miscellaneous Collections

Smithsonian Institution - 1867 - 85 páginas
...Length .1, breadth 3-40 inch. Found at Fresh Pond and other ponds, on stones and submerged sticks ; and has been for many years in our cabinets marked...front, dark, terminated with light ; tentacles rather stont, light drab-colored, with a line of silvery dots on the upper side, over the large, black eyes...
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Smithsonian Miscellaneous Collections

Smithsonian Institution - 1867 - 85 páginas
...Length .1, breadth 3-40 inch. Found at Fresh Pond and other ponds, on stones and submerged sticks ; and has been for many years in our cabinets marked as a Paladina. Animal very active ; head proboscidiform, half as long as the tentacles, bilobed in front,...
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Smithsonian Miscellaneous Collections

Smithsonian Institution - 1867 - 85 páginas
....1, breadth 3-40 inch. Found at Fresh Pond and other ponds, on stones and submerged sticks ; and haa been for many years in our cabinets marked as a Paludina....black eyes ; foot, tongue-shaped, as long as the first whirl, dilated into two acute angles in front, light drab-color ; respiratory organ occasionally protruded...
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