Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 1-14

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 15-17

Published in Proceedings of the Biological Society of Washington, in 1915, in volume 28, pages 19-23

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 25-43

Published in Proceedings of the Biological Society of Washington, in 1915, in volume 28, pages 45-48

Published in Proceedings of the Biological Society of Washington, in 1915, in volume 28, pages 49-52

Published in Proceedings of the Biological Society of Washington, in 1915, in volume 28, pages 53-60

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 61-68

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 70

Published in Proc. Biol. Soc. Wash., in 1915, in volume 28, pages 71-78

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 79-82

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 83-85

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 87-88

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 89-94

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 95-100

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 101-102

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 103

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 105-107

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 109-113

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 115-116

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 117-119

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 121-123

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 125-126

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 127-130

Published in Proc. Biol. Soc. Wash., in 1915, in volume 28, pages 131-132

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 133-137

Published in Proceedings of the Biological Society of Washington, in 1915, in volume 28, pages 142

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 145-146

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 147-148

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 149-150

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 151-159

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 161-164

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 165-168

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 169-170

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 171-173

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 175-176

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 181

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 182

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 183

Published in Proceedings of The Biological Society of Washington, in 1915, in volume 28, pages 184