Published in Biol Bull, in 1967, in volume 133, pages 679-696

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

Published in Biol Bull, in 1959, in volume 116, pages 88-94

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

Published in Biol Bull, in 2001, in volume 201, pages 26-33

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

Published in Zoological Science, in 1990, in volume 7, pages 55-61

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

Published in Zoological Science, in 1989, in volume 6, pages 1033-1036

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