. 



PLATE III. 



FIG. 



1. TURRIS NEGLECTA, p. 13, polypites, of the natural size. 



1 a. Polypites, magnified. After Wright. 1 b. A polypite 



in an earlier stage. After Gosse. 1 c. The medu- 

 siform zooid, magnified. After Forbes. 



2. CORDYLOPHORA LACusTRis, p. 16, nat. size. After 



All man. 



2 a. A polypite and a portion of the stem bearing a gono- 



pliore, magnified. The Author. 



3. The gonozooid of SYNCORYNE (SARSIA), p. 49, magnified. 



The Author. 



