Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 1-22
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 23-28
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 29-38
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 39-42
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 43-44
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 45-47
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 49-50
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 51-53
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 55-68
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 69-74
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 75-85
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 87
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 88
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 89
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 91-94
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 95-103
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 105-106
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 107-114
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 115-120
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 121-123
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Published in Proc. Biol. Soc. Washington, in 1909, in volume 22, pages 125-128
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 129-137
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 139-141
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 143-152
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 153-155
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 157-163
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 165-170
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 171-172
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 173-178
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 183-184
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 185-187
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 189-196
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Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 197-204
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 205-207
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 209-210
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 211-213
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Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 215-217
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