Published in Proceedings of the Biological Society of Washington, in 1939, in volume 52, pages 139-144
Published in Proc. Biol. Soc. Wash, in 1939, in volume 52, pages 165-166
Published in Proc. Biol. Soc. Wash, in 1939, in volume 52, pages 187-196
Published in Proceedings of the Biological Society of Washington, in 1939, in volume 52, pages 41-56
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 147-150
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 151-153
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 97-98
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 83-84
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 135-136
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 137-138
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 185-186
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 123-124
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 177-183
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 159-162
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 29-31
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 33-35
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 131-134
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 89-91
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 101-104
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 37-39
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 61-82
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 121-122
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 17-18
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 163-164
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 57-60
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 105-112
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 125-129
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 171-175
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 19-20
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 85-88
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 157-158
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 145-146
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 3-6
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 7-8
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Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 155-156
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 9-10
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 13-14
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 93-96
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 167-169
Published in Proceedings of The Biological Society of Washington, in 1939, in volume 52, pages 99