BUGULA TURRITA. 37 



Some scientists regard it, not as an appendage, but as equivalent 

 to a specialized zooid attached to the larger individual, 

 k) In some parts of the colony a rounded structure, the ocficium, 

 may be found just in front of the zocecium. It contains a single 

 developing ovum. 



Exercise 2. Draw one or more individuals, showing on a large scale 

 the various structures indicated in this study. 



