[ x 92 ] 



Explanation of the Plates. 



Tab. i. 



Fig. i. Actinia fociata, pag. 5. n. $. 



A. one of the heads expanding its claws. 



B. a younger one proceeding from the end of 

 the tube. 



Fig. 2. one of the animals diffec"ted longitudinally to 



(hew the infide magnified. 

 Fig. 3. Actinia Calendula, pag. 7. n. 10. 

 Fig. 4. Alcyonium mammillofum, pag. 179. n. $. 

 Fig. 5. two cells of the fame magnified and diffedted 

 longitudinally tofhew the polypes contracted. 

 Fig. 6. Alcyonium ocellatum, pag. 180. n. 6. 

 Fig. 7. One of the Polypes of Alcyonium digitatum, 

 pag. r 7 5. 72. 1. with its tentacula extended. 



Tab. 2. 



Fig. 1. Gorgonia ceratophyta diverted of its flefh. This 

 affords an inftance of its bone growing over and 

 furrounding one of its former branches, and 

 afterwards covering, as at A. fome Tree Oy- 

 fters that have adhered to the firfl: branch* 



Fig. 2. a quarter of a horizontal feclion of it. 



Fig. 3. the fame magnified, to fhew the different layers 

 of its growth. 



Fig. 4. An old ftem of Gorgonia verticillata, with fcaly 

 layers, fhining and hard, like mother of pearl. 



Fig. 5- 



