Published in Proc. Biol. Soc. Washington, in 1938, in volume 51, pages 43-46

Published in Proc. Biol. Soc, Washington, in 1938, in volume 51, pages 147-155

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 127-130

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 41-42

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 191-196

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 213-214

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 143-146

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 93-94

Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 65-66

Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 209-210

Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 135-136

Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 173-176

Published in Proceedings of the Biological Society of Washington, in 1938, in volume 51, pages 185-190

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 101-119

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 121-122

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 17-23

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 7-10

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 205-208

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 79-86

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 1-6

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 177-181

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 53-54

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 73-74

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 25-26

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 87-92

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 55-61

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 211-212

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 159-164

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 67-68

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 131-133

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 15-16

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 11-13

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 27-32

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 69-71

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 75-77

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 215-216

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 95-96

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 183-184

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 137-142

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 167-168

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 157-158

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 165-166

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 123-126

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 169-171

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 197-200

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 201-204

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 47-51

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 97

Published in Proceedings of The Biological Society of Washington, in 1938, in volume 51, pages 63