Published in American Malacological Bulletin, in 2007, in volume 23, issue 1, pages 81-87

Created: 2017-08-12, modified: 2017-08-12

Published in Biol Bull, in 1968, in volume 135, pages 322-334

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

Published in Biol Bull, in 1970, in volume 138, pages 326-333

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