Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 1-2
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 3-7
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 9-10
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 11-15
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 17-28
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 29-37
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 39-50
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 51-52
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 53-56
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 57-58
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 59-60
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 61-76
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 77-84
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 85-86
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 87-92
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 93
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 94
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 96
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 97-101
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 103-105
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 107-108
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 109-110
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Published in Proc. Biol. Soc. Wash., in 1912, in volume 25, pages 111-113
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 115-116
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 116
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Published in Proc. biol. Soc. Washington, in 1912, in volume 25, pages 117
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 119-120
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 121-126
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 127-128
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 129-130
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 131-133
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 135-140
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 141-155
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 157-162
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Published in Proc. Biol. Soc. Wash., in 1912, in volume 25, pages 163-164
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 165-175
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 177-179
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 181-184
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 185-186
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 186
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 187
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Published in Proceedings of the Biological Society of Washington, in 1912, in volume 25, pages 188
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Published in Proceedings of The Biological Society of Washington, in 1912, in volume 25, pages 189-190
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Published in Proc. Biol. Soc. Wash., in 1912, in volume 25, pages 191-192
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