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Ventral view of adult female crab showing swimmerets. A, inner swimmerets to which the eggs are attached;
1. Ventral view of adult female crab showing swimmerets. A, inner swimmerets to which the eggs are attached; B, external openings of oviducts
Photograph of female crab upon whose swimmerets remnants of an old sponge were found, thus showing that
2. Photograph of female crab upon whose swimmerets remnants of an old sponge were found, thus showing that the individual had spawned. This crab was taken with the dredge of February 28, 1917, in Chesapeake Bay. Note large, full appearance of ovaries, O, which are filled with mature eggs; L, digestive gland
Female crab bearing what is known to be at least the second sponge. Remnants of an old sponge were found
3. Female crab bearing what is known to be at least the second sponge. Remnants of an old sponge were found upon the swimmerets when she was taken on April 24. This individual was kept under observation in a wire cage in the water of Hampton River. On May 30, this sponge was formed. Microscopic examination during the next few days showed that the eggs were fertile and beginning to develop
 
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