218 L e II c k a r t ; iJericht über die Leistungen in der Naturgeschichte 



nuous (or jointed?) horny axis, which does not effervesce in mu- 

 riatic acid. 



Fani. 1. G or goniadae. Bark granulär persistent, with sun- 

 ken irregulär -shaped spiculae , with a more or less distinct groove 

 down each side, and with the cells in series one each side of the 

 branchlets. 



f Coral arborescent or reticulated; cells on side of the bran- 

 chlets. Gen. Gorgonia (arborescent, branchlets subcompressed ; cells 

 on side, moderate), Pterogorgia (arborescent, branchlets much com- 

 pressed , cells minute, on edge), Rhipidogorgia (reticulated, fan-like, 

 cells on sides). 



ff Corai frondose; cells on surface of frond. Gen. Hymeno- 

 gorgia (axis branched, filiform, branches separate), Phyllogorgia (axis 

 branched, filiform, branches netted), Phyllogorgia (axis expanded 

 foliaceous, thin). 



Farn. 2. Plexauridae. Bark granulär, persistent, cork-like, 

 without any impressed lateral groove. Cells placed equally on all 

 sides of the branches. Gen. Plexauia (Bebryce ; cells not raised, 

 simple), Rhinogorgia (cells not raised, bounded by a conical process), 

 Eunicea (cells more or less produced, simple), Gonidora (cells con- 

 vex ; mouth radiated). 



Farn. 3. Muriceidae. Bark composed of large imbricate cal- 

 careous spiculae, without any lateral grooves. Cells equally on all 

 sides of the branchlets. Gen. Muricea, Plocmus (?). 



Farn. 4. Acanthog orgiadae. Bark thin, fornied of slender 

 filiform spiculae, without any lateral grooves. Cells campanulate, on 

 all sides of the branches, with ridges of elongated spiculae, and 

 with a number of elongate setaceous spines on the niargin. Gen. 

 Acanthogorgia. 



? Fam. 5. Antipathi d a e. Bark fleshy easily deciduous, soft 

 simple, only strengthened by large and small scattered silicious (?) 

 plates. Gen. Leiopathes, Antipalhes. 



Fam. 6. Sarcogorgiadae. Bark fleshy, when dry, skin-like. 

 smooth, without spiculae ; the edges of the cells strengtheed with gra- 

 nulär spiculae. Gen. Sarcogorgia. 



"^■'"•' Sarcophyta. Coral arborescent lobulated or expanded, only 

 strengthened by internal or external calcareous spiculae, which eff'er- 

 vesce in acid. 



Fam. 1. Briareidae. Coral arborescent, fleshy, supported 

 by a central axis formed of numerous intertwined fusiform spiculae. 

 Gen. Briareum. 



Fam. 2. Alcyoniadae. Coral arborescent or lobed , fleshy, 

 strengthened with imbedded calcareous spiculae. Cells simple. Po- 



