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Excerpt from Contributions to the Life Histories of Gordius Robustus Leidy and Paragordius Varius (Leidy)It was noted at the time that both localities were at the edges of rapids. This led to the investigation of other rapids with the result that hundreds of specimens were collected. It was possible to walk along the bank of a stream and descend at rapids with grassy borders and collect Gordius in masses containing sometimes as many as 25 or 5...

Excerpt from Contributions to the Life Histories of Gordius Robustus Leidy and Paragordius Varius (Leidy) Von Siebold and following him Meissner (1855) placed Gordius and Mermis together to form the order Gordiacea. Meissner's work on the anatomy and physiology of Gordius and Mermis is in many respects an excellent production and it is inconceivable how, after such observations, he could still regard the two groups as closely related. The wor...