Published in Biol Bull, in 1987, in volume 172, pages 132-136

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

Published in Zoological Science, in 1990, in volume 7, pages 303-309

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

Published in Biol Bull, in 1923, in volume 45, pages 105-112

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

Published in Zoological Science, in 1993, in volume 10, pages 697-703

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

Published in Geodiversitas, in 1999, in volume 21, issue 4, pages 751-765

Created: 2018-05-22, modified: 2018-05-22