PLATE LXXIV. 



FIG. 



1. ALCYONELLA STAGNORUM, p. 391. Of the natural size and 



appearance. 



2. A longitudinal section of the polypidom. 



3. A portion of the surface magnified. 



4. A transverse section. 



5. A front view of the Polype. 



6. A back view of the Polype. Figs. 5 and 6 are copied 



from Raspail. 



