Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 More Friends in Armor 247 habits of the fiddler crab, some of the sponjre-bearinjT females spend quite as much of their time in the water of the neighboring pools as under the archway of their ovens. With our captives installed in two-quart jars, half filled with sea water and a layer of clean sand on the bottom, we avxait developments. Each tank holds one FEMALE FIDDLER CRAB. THE DARK MASS ON HER ABDOMEN IS A BROOD OF EGGS AND IS KNOWN AS THE 'SPONGE.' female, and her jar is kept nice and fresh by the addition of a frond of
Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 More Friends in Armor 247 habits of the fiddler crab, some of the sponjre-bearinjT females spend quite as much of their time in the water of the neighboring pools as under the archway of their ovens. With our captives installed in two-quart jars, half filled with sea water and a layer of clean sand on the bottom, we avxait developments. Each tank holds one FEMALE FIDDLER CRAB. THE DARK MASS ON HER ABDOMEN IS A BROOD OF EGGS AND IS KNOWN AS THE 'SPONGE.' female, and her jar is kept nice and fresh by the addition of a frond of sea lettuce. A cool, well-lighted place at a north wnndow insures results more nearly approaching those under natural conditions. In the meantime a closer inspection of the animals may be profitable. It w^as pointed out in an earlier chapter that the true crabs, or brachyurans, in contradistinction to the lob-
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