Authors: C T Brues

Published in Biological Bulletin, in 1903, in volume 4, pages 179-190

Created: 2011-06-03, modified: 2011-06-21

Authors: W C Curtis

Published in Biological Bulletin, in 1903, in volume 5, pages 125-142

Created: 2012-06-21, modified: 2012-06-21