Turbellarian taxonomic database
Pearse AS 1938 (citation)- p 94-97. Key to the Polyclads reported from the Eastern Coast of North America.
Prudhoe S 1985 (citation)- Preface, "Polyclad turbellarians are interesting marine flatworms, but they have received relatively little notice from students of marine life. In fact, there exists only one monograph dealing with the group as a whole. It was prepared by a former membef of the Naples Marine Station, Dr Anton Lang, and published in 1884. "