Planonemertes Coe 1926

Coe 1926. The Pelagic Nemerteans. Reports on an explora-tion off the West Coast of Mexico, Central & South America, etc., xxxix, and Reports on the scientific results of the Expedition to the Eastern Tropical Pacific, etc., xxxiv. Memoirs of the Museum of Comparative Zoology of Harvard College, 49 1926: pp. 1-246