OF THREE AUSTRALIAN SPECIES OF TUNICATA. 371 



Fig. 2. Right view of the animal removed from its test. 

 Fig. 3. Left view of ditto. 

 Fig. 4. Portion of the test, under a low power. 

 Fig. 5. Portion of the test, highly magnified. 



Fig. 6. Part of the internal fibrous and granular layer of the test, seen in face, and showing the aper- 

 tures of nutritive canals. 



III. C.pellucida. Shark Bay species (No. 2). 



Fig. 1. The animal in its natural state. 



Fig. 2. Right view of the animal removed from its test. 



Fig. 3. Dorsal view of the same. 



k. Sacculations beneath the branchial membrane. 



/. Endostyle. 

 Fig. 4. Left lateral view. 



m. Left testis and ovarium. 



n. The heart. 



0. Elongated body on which the heart rests, as alluded to in the text. 



3c 2 



