SEA-PENS, GORGONIAS, &c. 



241 



Fig. 488. Single 



Polyp of Renilla, 



enlarged. 



Fig. 490. Sea-Fan. 

 Fig. 489. Red Coral. Portion of large frond. 

 Single Polyp, enlarged. 



Fig. 491 . Verrucella. 



Fig. 492. Red Coral. Fig. 493. Primnoa. Fig. 494. Organ-pipe. 



