Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 1-13
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 15-16
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 17-21
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 23
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Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 25-30
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 31-34
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 35-42
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 43-5
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Published in Proc. Biol. Soc. Washington, in 1941, in volume 54, pages 47-48
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 49-50
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 51-53
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 55-61
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 63-66
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Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 67-68
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 69-71
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Published in Proc. Biol. Soc. Washington, in 1941, in volume 54, pages 73-76
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 77-79
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 81-85
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 87-94
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 95-107
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 109-113
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 115-117
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 119-124
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 125-128
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 129-132
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 133-135
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Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 137-142
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 143-144
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 151-159
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 161-164
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Published in Proc. Biol. Soc. Wash, in 1941, in volume 54, pages 165-168
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 169
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 175-178
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 179-180
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Published in Proc. Biol. Soc. Wash, in 1941, in volume 54, pages 181-182
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 183-185
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 187-188
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 189-191
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Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 193-194
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Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 195-196
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 197-200
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Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 211-216
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