Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 1-6
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 7-22
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 27-28
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 29-32
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 33-34
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 35-37
Published in Proc Biol Soc Washington, in 1901, in volume 14, pages 39-40
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 41-45
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 47-86
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 87-89
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 91-93
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 95-96
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 97-98
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 99-104
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 105-106
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 107-117
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 119-124
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 125-126
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 127-128
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 129-130
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 131-132
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 133-134
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 135-136
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 137-143
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 145-148
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 153-155
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 157-159
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 161-163
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 169-175
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 177-178
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 178
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 179-180
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 181-182
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 183-185
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 187-188
Published in Proc. Biol. Soc. Washington, in 1901, in volume 14, pages 189-191
Published in Proceedings of The Biological Society of Washington, in 1901, in volume 14, pages 193-194