Published in Biol Bull, in 1953, in volume 105, pages 348-353

Created: 2010-01-06, modified: 2017-01-06

Published in Zoological Science, in 1991, in volume 8, pages 705-712

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

Published in Biol Bull, in 2000, in volume 199, pages 287-297

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

Published in Pacific Science, in 1954, in volume 8, issue 2, pages 209-218

Created: 2017-09-10, modified: 2017-09-10

Published in Zoological Science, in 1990, in volume 7, pages 195-200

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