Published in Biol Bull, in 1906, in volume 10, pages 99-114

Published in Biol Bull, in 1906, in volume 10, pages 122-137

Published in Biol Bull, in 1906, in volume 10, pages 255-297

Published in Biol Bull, in 1906, in volume 11, pages 60-70

Published in Biol Bull, in 1906, in volume 11, pages 193-201

Published in Biol Bull, in 1906, in volume 12, pages 37-52