Published in Zoological Science, in 1992, in volume 9, pages 1009-1015

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

Published in Biol Bull, in 1976, in volume 150, pages 402-410

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

Published in Biol Bull, in 1969, in volume 137, pages 297-311

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

Published in Biol Bull, in 1966, in volume 131, pages 104-114

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

Published in Biol Bull, in 1981, in volume 161, pages 172-179

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