Published in Proceedings of The Biological Society of Washington, in 1913, in volume 26, pages 1-3

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Published in Proc. Biol. Soc. Washington, in 1913, in volume 26, pages 27-29

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Published in Proc. Biol. Soc. Washington, in 1913, in volume 26, pages 69-71

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Published in Proc. Biol. Soc. Washington, in 1913, in volume 26, pages 87-88

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