On the anatomy and physiology of Cordylophora , a contribution to our knowledge of the tubularian zoophytes

Abstract

The author, after pointing out the necessity of giving greater definiteness to the terminology employed in the description of the true zoophytes, proceeds to the anatomical details of Cordylophora , a genus of Tubularladæ .He demonstrates that Cordylophora is essentially composed in all its parts of two distinct membranes enclosing a cavity, a structure which is common to all the Hydroida .