Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 1-9

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 13-16

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 17-18

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 19-20

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 21-28

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 29-32

Published in Proceedings of the Biological Society of Washington, in 1948, in volume 61, pages 33-40

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 41-45

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 49-50

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 51-54

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 55-65

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 69-74

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 77-81

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 85-92

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 93-96

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 97-98

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 99-107

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 127-138

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 139-140

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 141-148

Published in Proceedings of the Biological Society of Washington, in 1948, in volume 61, pages 159-166

Published in Proc Biol Soc Washington, in 1948, in volume 61, pages 169-170

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 171-174

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 175-176

Published in Proceedings of The Biological Society of Washington, in 1948, in volume 61, pages 177-180