PLATE V. 



no. 



a. PODOCORYNE CARNEA, p. 29, nat. size. 



b. A portion of a colony, magnified, with the base con- 



solidated into a crust. 



c. A portion of a colony, with a simple retiform base. 



d. The gonozooid, magnified. 



e. A polypite from the edge of the shell, with three of the 



spiral appendages. 



e'. One of the spiral appendages. 



