Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 1-7

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 9-18

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 19-22

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 23-24

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 25-27

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 31-41

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 47-48

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 51-53

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 55-56

Published in Proceedings of the Biological Society of Washington, in 1927, in volume 40, pages 57-64

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 65-73

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 75-77

Published in Proceedings of the Biological Society of Washington, in 1927, in volume 40, pages 79-88

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 89-90

Published in Proc. Biol. Soc. Washington, in 1927, in volume 40, pages 91-92

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 93-94

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 95-96

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 97-98

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 99-109

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 113-114

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 125-126

Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 127-128

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 131-137

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 149-177

Published in Proc. Biol. Soc. Washington, in 1927, in volume 40, pages 179-192

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 197-204

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Published in Proceedings of The Biological Society of Washington, in 1927, in volume 40, pages 207-210