Published in Proceedings of the Biological Society of Washington, in 1947, in volume 60, pages 1-6

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 9-13

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 19-26

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 27-28

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Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 51-56

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 59-60

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Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 73-76

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 79-81

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 83-89

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Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 95-96

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Published in Proceedings of the Biological Society of Washington, in 1947, in volume 60, pages 107-118

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Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 141-146

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 149-163

Published in Proceedings of The Biological Society of Washington, in 1947, in volume 60, pages 165-168