95 



Claveliua lepadiformis ; diagrammatic, showing the anatomy. Tlie oval bodies 

 are the eggs ; at lower end lies the tubular heart ; the root-like processes at 

 the base grow into stolons, whence other ascidiozooids arise. 



Fig. 15. 



Perophora Usteri ; A, slightly, B, further magnified. Ascidiozooids in right, 



left, and lateral aspects. 



a, branchial ; b, atrial orifice. 



