Zoophytes with Pinnated Tentacles. ! 13 



Fam. Z-. Muriccidae. 

 Hark composed of large imbricate calcareous spicula, without 

 any lateral grooves. Cells equally <>" all sides of the branchlets, 

 Muricea. Plocmus ? 



Fam. i. Acantliogorgiada?. 



Bark thin, formed of slender filiform spicula, without any 

 lateral grooves. Cells campanulate, on all sides of the branches, 

 with ridges of elongated spicula, and with a number of elongate 

 setaceous spines on the margin. 



Acanthogorgia. 



? Fam. 5. Antipatliidae. 



Bark tleshy, easily deciduous, soft, simple, only strengthened 

 by large and small, scattered, silicious ? plates. 

 Leiopathos. Antipathes. 



I have observed pinnate tentacles in Leiupathes, and indica- 

 tions of them in one Antipathes. Dana describes them as simple 

 in two species of Antipathes which he saw alive; so that the 

 position of this family is open to doubt. 



Fam. 6. Sarcogorgiadse. 



Bark tleshy, when dry skin-like, smooth, without spicula ; 

 the edges of the cells strengthened with granular spicula. 

 Sarcogorgia. 



Suborder III. Sarcophyta. 



Coral arborescent, lobulated or expanded, only strengthened 

 by internal or external calcareous spicula, which effervesce in 

 acid. 



Fam. 1. Briareidae. 



Coral arborescent, fleshy, supported by a central axis formed 

 of numerous intertwined fusiform spicula. 

 Briar eum. 



Fam. 2. Alcycmiadae. 



Coral arborescent or lobed, fleshy, strengthened with imbedded 

 calcareous spicula. Cells simple. Polype retractile or semi- 

 retractile. 



Alcyonium (Lobularia). Sympodium. Ammothea. 



Fam. 3. Xeniadse. 



Coral expanded or arborescent, fleshy, soft, creeping or 

 branched. Polype elongate, subcylindrical. Tentacles not re- 

 tractile. 



*Xenia. Anthelia. Rhizoxenia, Evagora. **ComuIaria. 



