Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 1-9

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 11-18

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 19-30

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 31-32

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 33-34

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 35-37

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 39-41

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 43-46

Published in Proc. Biol. Soc. Wash., in 1908, in volume 21, pages 47-52

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 53-61

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 63-67

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 69-83

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 85-89

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 91-105

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 107-118

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 119-124

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 125-136

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 137-140

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 141-142

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 143-144

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 145-147

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 149-152

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 153-156

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 157-161

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 163

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 165-169

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 171-173

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 175-188

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 189-190

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 191-195

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 197-198

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 199-206

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 207-209

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 211-212

Published in Proceedings of The Biological Society of Washington, in 1908, in volume 21, pages 213-218

Published in Proceedings of the Biological Society of Washington, in 1908, in volume 21, pages 219-232