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Distal parts of the intromittent organ of Phalloptychus januarius. A, the organ as it is normally found; b, unfolded: (a, third anal ray; b, fourth anal ray; c, fifth anal ray); c, third analy ray, 1 view. d, fifth anal ray, enlarged.
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Cyprinodon variegatus. Variegated Minnow. Male.
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Zygonectes pulvereus, sp. nov.. About three times natural size
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Girardinus garmani Eigenmann, new species.
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Fundulus Majalis. Mayfish. Young.
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Gambusia holbrookii, male.
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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 ocellaris Jordan and Gilbert.
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Cyprinodon variegatus. Variegated Minnow. Young.
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Distal parts of the intromittent organ of Girardinus metallicus. a, Third anal ray; b, fourth anal ray; c, fifth anal ray.
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Mayfish, Fundulus majolis (L.) (male). Woods Hole.
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Gambusia holbrookii, female.
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Lucania goodei Jordan.
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Gambusia patruelis. Top Minnow. Female.
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Fundulus zebrinus Jordan & Gilbert. Ellis, Kansas.
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Cyprinodon variegatus Lacepede. Variegated Minnow. Young.
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Fundulus Diaphanus. Spring Minnow. Female.
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Mayfish, Fundulus majolis (female). Woods Hole.
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Glaridichthys torralbasi Eigenmann, new species.
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Gambusia punctata, from Cuba. A. Male; B. Female
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Star-Headed Minnow. Fundulus nottii.
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Cyprinodon calaritanus (da Griffini).
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Cyprinodon variegatus : Mature unfertilized egg.