- A Monograph of the Fresh-Water Polyzoa, Including all the Known Species, both British and Foreign
- A Monograph of the Gymnoblastic or Tubularian Hydroids
- Report on the Hydroida Dredged by H.M.S. Challenger During the Years 1873-76
- A Monograph of the Gymnoblastic or Tubularian Hydroids: Plates
- Report on the Hydroida Collected During the Exploration of the Gulf Stream by L. F. De Pourtales, Assistant U.S. Coast Survey ..












