Published in Biol Bull, in 1963, in volume 125, pages 182-187

Created: 2010-01-06, modified: 2011-06-21

Published in Biol Bull, in 1984, in volume 166, pages 68-77

Created: 2010-01-07, modified: 2011-06-21

Published in Zoological Science, in 1992, in volume 9, pages 329-335

Created: 2012-09-19, modified: 2012-09-19

Published in Zoological Science, in 1994, in volume 11, pages 847-853

Created: 2012-09-19, modified: 2012-09-19

Published in Biol Bull, in 1994, in volume 186, pages 285-290

Created: 2010-01-07, modified: 2011-06-21