Published in Proc. Biol. Soc. Washington, in 1916, in volume 29, pages 85

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Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 73-76

Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 85

Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 25-26

Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 165-172

Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 51-62

Published in Proceedings of the Biological Society of Washington, in 1916, in volume 29, pages 1-66

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Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 105-108

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 89-91

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 7-8

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Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 109-123

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 83-84

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Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 95-98

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 48

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 86

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 127

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 128

Published in Proceedings of The Biological Society of Washington, in 1916, in volume 29, pages 126