218 Leuckait: Bericht über die Leistungen in der Katurgeschichte 



ntious (or joinled?) horny axis , which does not effervesce in mu- 

 riatic aeid. 



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

 ken irregulär -shaped spiculae, with a niore or less dislinct groove 

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

 branchlets. 



+ 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). 



ft Coral frondose; cells on surface of frond. Gen. Ilymeno- 

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

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

 foliaeeous, thin). 



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

 without any impressed lateral groove. Cells placed cqually on all 

 sides of the branches. Gen. l'lexauia (ßebryce ; cells not raised, 

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

 Eunicea (cells niore 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. Murine», Plocmus (?). 



Fam. 4. Acan thog orgiadae. Bark thin, formed of slender 

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

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

 with a number of elongate setaeeous spines on tbe margin. Gen. 

 Acanthogorgia. 



? Fani. 5. Antipa tki d a e. Bark fleshy easily deeiduous, soft 

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

 plates. Gen. Leiopathes, Antipalhes. 



Fam. 6. Sarcogorg iadae. Bark fleshy, when dry, skin-like. 

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

 nulär spiculae. Gen. Sarcogorgia. 



ttö1 ' Sarcophyla. Coral arborescent lobulated or expanded, only 

 strengthened by internal or external calcareous spiculae, which effer- 

 vesce in aeid. 



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

 by a centrat 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- 



