FIG. 129. Buyula turrita, a marine ectoproct. A colony, magnified 1.5 

 diams. Photo, of living animals by W. H. C. P. 



FIG. l.'it'. PlumateUa polymorpha, a fresh-water ectoproct, magnified 1.5 

 diams. Photo, of living animal by W. H. C. P. 



142 



