287 



* Shrub-like, spreading. Corallium. 



1. C. nobile, Ehrenb. B.M. 

 Isis nobilis, Linn. 



Gorgonia pretiosa, Solander, Zooph. t. 13. 

 Corallium rubrum, Carolini, t. 2. 

 Mediterranean. 



** Fan-shaped, branches on a plane. 



2. Corallium secundum. 



Corallium secundum, Dana, Exped. t. 60. f. 1. 

 Sandwich Islands. 



2. Annella. 



Coral rather fan-like, sinuous, branched ; branches subcylindrical, 

 rather compressed, inosculating. Axis continuous, soft, woody, 

 white, calcareous, effervescing in muriatic acid, flexible. Bark mo- 

 derately thick, granular, with imbedded spicula, without any im- 

 pressed lateral grooves, with numerous equally diffused small circular 

 imbedded polypiferous cells, aperture closed with eight keeled conical 

 valves, forming a rather convex cone (which are absent in the worn 

 specimens). 



1. a. reticulata. b.m. 



3. Ellisella. 



Coral simple or furcately branched ; branches subcylindrical, 

 with a more or less distinct lateral groove, especially at the base. 

 Axis continuous, opake, solid, calcareous, hard at the base, white and 

 softer above. Bark when dry granular, thin, with numerous series 

 of sunken or slightly prominent polypiferous cells on each edge of 

 the stems and branches. 



* Coral simple, subcompressed beneath. Junceella, Valenc. 



1. E. JUNCEA. B.M. 



Gorgonia Juncea, Pallas ; Esper, t. 52 1 ; Seba, Thesaur. t. 105. 

 f. 1 a, left figure. 



Junceella Juncea, Valenc. 



** Coral furcately branched, branches subcylindrical. 



2. E. ELONGATA. B.M. 



Gorgonia elongata, Pallas; Esper, t. 55. 



3. E. coccinea. B.M. 



Branches very long, virgate, bright scarlet. 



*** Coral branched, fan-like ; branches with a series of virgate 

 branches on the upper side only. Ctenocella. 



4. E. PECTINATA. B.M. 



Gorgonia pectinata, Pallas; Seba, Thes. t. 105. f. 1 a, central 

 figure. 



Pterogorgia pectinata, Dana, n. 17. 



