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Fundulus ocellaris Jordan and Gilbert.
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Lucania parva.
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Zygonectes pulvereus, sp. nov.. About three times natural size
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Fundulus Diaphanus. Spring Minnow. Female.
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Fundulus Majalis. Mayfish. Young.
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Fundulus seminolis Girard.
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Rathbun's Killi-Fish. Fundulus rathbuni.
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Fundulus pallidus, sp. nov.. About three times natural size
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Fundulus zebrinus Jordan & Gilbert. Ellis, Kansas.
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Lucania parva : Egg with blastoderm of 16 cells.
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Fundulus Diaphanus. Spring Minnow. Male.
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Mayfish, Fundulus majolis (L.) (male). Woods Hole.
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Lucania goodei Jordan.
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Star-Headed Minnow. Fundulus nottii.
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Fundulus Heteroclitus. Common Killfish. Male.
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Lucania parva : Egg with blastoderm of 2 cells.
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Spring Minnow. Fundulus diaphanus. Male.
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Mayfish, Fundulus majolis (female). Woods Hole.
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Zygonectes macdonaldi. About twice natural size
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Mummichoc (Fundulus heteroclitus).
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Lucania parva : Egg with blastoderm of 4 cells.
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Spring Minnow. Fundulus diaphanus. Female.
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Mummichog; Male (Fundulus heteroclitus (Linnaeus)).
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Lucania parva : Egg with blastoderm of 8 cells.