Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 1-6

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 7-13

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 15-16

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 17-19

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 21-23

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 25-29

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 31-36

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 39-40

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 41-43

Published in Proc. Biol. Soc. Wash, in 1928, in volume 41, pages 45-48

Published in Proc. Biol. Soc. Washington, in 1928, in volume 41, pages 49-51

Published in Proc. Biol. Soc. Washington, in 1928, in volume 41, pages 53-59

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 61-66

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 67-68

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 71-84

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 85-86

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 89-91

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 93-95

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 97-106

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 107-109

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 111-113

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 115-119

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Published in Proc. Biol. Soc. Wash, in 1928, in volume 41, pages 127-128

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 133-138

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 139-140

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 157-163

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 167-168

Published in Proc. Biol. Soc. Washington, in 1928, in volume 41, pages 169-170

Published in Proc. biol. Soc. Wash, in 1928, in volume 41, pages 175-188

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 189-190

Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 201

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