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Blue Crab (Callinectes sapidus) males
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Callinectes sapidus. Figure 1--the Cast Shell of a Half-Grown Male; Figure 2--The Ventral Surface of a Full-Grown Male
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Blue Crab (Callinectes sapidus) females: virgin (above) and egg-bearing (below)
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Callinectes sapidus. Ventral Surface of a Virgin Female, Showing the Narrow, Triangular Abdomen (fig.3); Ventral Surface of an Ovigerous Female, Showing the Broad, Semi-Circular Abdomen (Fig.4)
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Blue Crab (Callinectes sapidus) backing out of old shell during final stages of molting
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Callinectes Sapidus. Cast shell of a half-grown male (1); Ventral Surface of a Full-Grown Male
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Callinectes Sapidus. Three Successive Stages of the Molting of One Individual of Callinectes Sapidus
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Callinectes Sapidus. Further Stages of the Molting of Callinectes Sapidus
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Callinectes sapidus, the blue crab.
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USNM 1448886 - Specimen Image 1
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USNM 1448886 - Specimen Image 2
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USNM 1448886 - Specimen Image 3
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USNM 1499671 - Specimen Image; Field number: SERCINVERT2982
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intersex (gynandromorph) specimen showing both male and female characteristics
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intersex (gynandromorph) specimen showing both male and female characteristics
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intersex (gynandromorph) specimen showing both male and female characteristics
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intersex (gynandromorph) specimen showing both male and female characteristics
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intersex (gynandromorph) specimen showing both male and female characteristics