In December, 1936, I received from a Continental fellow-author of works on fossil Polyzoa, especially Cretaceous, a list of certain species described in Part III of “Further Notes on new or imperfectly known Chalk Polyzoa”, with a request that I would state the difference between them and the other species previously described which were linked with them in the list. I replied that I should always be prepared to answer such an inquiry on the understanding that the inquirer accepted as valid any answers which he could not dispute;