Published in Biol Bull, in 1920, in volume 38, pages 33-37

Published in Biol Bull, in 1920, in volume 38, pages 39-76

Published in Biol Bull, in 1920, in volume 38, pages 77-82

Published in Biol Bull, in 1920, in volume 38, pages 83-103

Published in Biol Bull, in 1920, in volume 38, pages 103-122

Published in Biol Bull, in 1920, in volume 38, pages 123-140

Published in Biological Bulletin. Marine Biological Laboratory (Woods Hole), in 1920, in volume 38, pages 141-169

Published in Biol Bull, in 1920, in volume 38, pages 171-195

Published in Biol Bull, in 1920, in volume 38, pages 294-316

Published in Biol Bull, in 1920, in volume 38, pages 317-339

Published in Biol Bull, in 1920, in volume 38, pages 353-403

Published in Biol Bull, in 1920, in volume 38, pages 404-474

Published in Biol Bull, in 1920, in volume 39, pages 67-87

Published in Biol Bull, in 1920, in volume 39, pages 147-187

Published in Biol Bull, in 1920, in volume 39, pages 316-362