Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 107-114

Published in Proc. Biol. Soc. Washington, in 1909, in volume 22, pages 125-128

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 115-120

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 185-187

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 197-204

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 39-42

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 143-152

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 75-85

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 173-178

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 1-22

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 89

Published in Proceedings of the Biological Society of Washington, in 1909, in volume 22, pages 89

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 29-38

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 129-137

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 183-184

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 205-207

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 209-210

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 211-213

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 215-217

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 157-163

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 121-123

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 189-196

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 153-155

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 95-103

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 91-94

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 165-170

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 139-141

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 43-44

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 45-47

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 55-68

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 49-50

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 23-28

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 51-53

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 171-172

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 105-106

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 69-74

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 88

Published in Proceedings of The Biological Society of Washington, in 1909, in volume 22, pages 87