Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 119-124

Published in Proc. Biol. Soc. Wash, in 1941, in volume 54, pages 165-168

Published in Proc. Biol. Soc. Wash, in 1941, in volume 54, pages 181-182

Published in Proc. Biol. Soc. Washington, in 1941, in volume 54, pages 47-48

Published in Proc. Biol. Soc. Washington, in 1941, in volume 54, pages 73-76

Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 137-142

Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 195-196

Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 25-30

Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 67-68

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 31-34

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 43-5

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 143-144

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 1-13

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 17-21

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 63-66

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 95-107

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 161-164

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 179-180

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 69-71

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 109-113

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 189-191

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 49-50

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 51-53

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 55-61

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 129-132

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 175-178

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 35-42

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 151-159

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 211-216

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 183-185

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 187-188

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 15-16

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 115-117

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 125-128

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 197-200

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 77-79

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 81-85

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 87-94

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 133-135

Published in Proceedings of the Biological Society of Washington, in 1941, in volume 54, pages 193-194

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 23

Published in Proceedings of The Biological Society of Washington, in 1941, in volume 54, pages 169