Published in Proceedings of the Biological Society of Washington (1882-1884), in 1885, in volume 2, pages 67-79

Created: 2011-06-01, modified: 2022-12-02

Published in Proceedings of the Biological Society of Washington, in 1885, in volume 3, pages 21-24

Created: 2011-07-31, modified: 2015-11-26