Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 1-6
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 7-10
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 11-13
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 15-16
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 17-23
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 25-26
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 27-32
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 41-42
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Published in Proc. Biol. Soc. Washington, in 1938, in volume 51, pages 43-46
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 47-51
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 53-54
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 55-61
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 63
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Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 65-66
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 67-68
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 69-71
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 73-74
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 75-77
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 79-86
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 87-92
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 93-94
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 95-96
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 97
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 101-119
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 121-122
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 123-126
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 127-130
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 131-133
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Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 135-136
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 137-142
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 143-146
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Published in Proc. Biol. Soc, Washington, in 1938, in volume 51, pages 147-155
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 157-158
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 159-164
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 165-166
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 167-168
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 169-171
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Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 173-176
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 177-181
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 183-184
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Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 185-190
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 191-196
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 197-200
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 201-204
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 205-208
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Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 209-210
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 211-212
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 213-214
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Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 215-216
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