moe ely IX. 
PLATE 1. 
ZOOPHYTA. POLYZOA. 
THE forms of animal life which are now united in 
an independent class, under the name Polyzoa, so 
nearly resemble the Hydroid Zoophytes in general 
form and appearance that a casual observer may sup- 
pose them to be nearly identical. In all but the more 
recent works, they are treated as distinct indeed, but 
still included under the general term “ ZOOPHYTES.” 
The animals of both groups are minute, polypiform 
creatures, mostly living in transparent cells, springing 
from the sides of a stem which unites a number of 
