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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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 87-88

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

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

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

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

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

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

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 121-122

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 123-124

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 125-126

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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 129-131

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

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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 141-142

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 143-144

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 145-150

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 151

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 153-156

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

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

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

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

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

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

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 203-206

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 207-208

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 209-210

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Published in Proceedings of The Biological Society of Washington, in 1928, in volume 41, pages 211-214

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