40(3 Dr. J. K. It ray on ncio Genera and Species of 



Mun'teUa fucosa = Gor(jon ia jyalnuij var. alba, Espcr, 1. 1 1 . B. M . 



G. albicans, KoUiker. 



G.fucom, Valcn. Voy. V(5nu3, t. 1.3. 



Hah. Caliturnia. A very variable species. 



BOAKELLA. 



Coral branched in a plane, fan-shaped, forming an oblong 

 frond with a single stem ; branches and branchlets slender, 

 nearly of the same diameter, netted ; branches diverging and 

 often inosculating, some of the marginal branchlets free. 

 Bark thin, formed of thin scales or spicules. Poly})c-cells 

 subeyliudrical, elongate, truncate, membranaceous, translucent, 

 with a circular mouth with ten marginal folds and ten short 

 valves in an irregular scries on each side of the branches, 

 diverging in different directions, one, sometimes two or three, 

 together, .Axis continuous, horny. 



Boarella Jiabellata. B.M. 



Menacella. 



Coral very much branched, fan-shaped, irregularly reticu- 

 lated ; stem simple. Bark very thin, formed of numerous 

 very' slender fusiforai spicules in bundles, placed in different 

 directions. Polype-cells sliort, cylindrical, covered with spi- 

 cules like the bark, with a smooth, convex, eight-rayed lid, 

 placed close together on the sides of the branchlets, and more 

 scattered and fm-ther apart on the sides of the branches. 

 (Muriceadaj.) 



Menacella reticularis = Gorgonia reticularis, Pallas. B.M. 

 PlIiEOCELLA. 



Coral branched, fan-like ; stem rather compressed ; branches 

 irregularly furcate, all in one plane, cylindrical, rai-ely 

 tapering at the end; brancldets, some subpinnate, others sub- 

 secund on the u})perside of the branches. Bark thin, fonned 

 of abundance of small fusiform opaque s})icules placed in 

 groups in different directions. Polype-cells small, on all sides 

 of the stem and branches, ascending, with a rather hood-like 

 outer surface, fonning a short cylindrical tubercle, formed of 

 spicules like those of the bark. Axis continuous, horny, black ; 

 branches and branchlets tapering. (Muriccadje.) 



Phcpocella tuherculata = Gorgonia tuherculata, Es])er, i. t. 37. 

 MediteiTanean. 



