95 
[iff 
Clavelina lepadiformis ; diagrammatic, showing^the anatomy. The 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. 
PeropJwra listen ; A, slightly, B, further magnified. Ascidiozooids in right, 
left, and lateral aspects. 
a, branchial ; b, atrial orifice. 
