194 ZOOPHYTES. 



I have obtained similar corpuscula from the Pennatula at other 

 seasons, round like a barrel, and with a prolongation quite as great 

 or greater than any of the preceding. But none lived long enough, or 

 exhibited sufficient characteristics to sanction positive conclusions. It is 

 singular, however, that such animals can survive amidst the putrescence 

 of the substance of the Pennatula. I considered them as advanced far 

 beyond the state of ova ; nor had the skilful naturalists who saw them, 

 any doubt of their animation. 



Like other Asteroid Zoophytes, this is strictly a nocturnal animal. 

 It enlarges remarkably as evening comes. It is then that the lobes are 

 swollen ; and the hydra? most amply displayed in vigour, while the whole 

 variable organic structure expands by intumescence. 



Plate XLIV. Fig. ]. Pennatula phosporea. — Sea feather. 

 2. Internal bone. 

 S. Section. — Lobes. 



4. Section shewing the form. — Lobes. 



5. Hydra unfolding. 



6. Hydra displayed. 



7. Hydra. — Pectinate form viewed in front. 



8. Portion of the surface of the skin. 



9. Spiculse. 



10. Corpuscula from the lobes. 

 IT. Nascent Pennatulse. 



All the figures of this Plate, except the first and second, 

 are enlarged. 



