34 CALLIGOPvGIAD.E. 



. 56. HYPNOGORGIA. 



Characters of the family. 

 Hypnogorgia, Dttchass. $ Michel. Corall. Antilles, S^lppl. p. 115. 



MM. Duchassaing and Michelotti (Z. c.) observe, " The disposition 

 of the cells is sufficient to distinguish this genus from the genus 

 Blepharogorgia, established by Mr. Gray in the Zoological Journal." 

 I have not established any genus of that name ; but they have de- 

 scribed one themselves at p. 109 (Corall. Ant.) ; so it may be a slip 

 of the pen. 



129. Hypnogorgia pendula. 



Coral branched in a plane ; branches very numerous, drooping, 

 and pendulous ; branchlets subopposite ; cells alternate or opposite, 

 rather far apart. Axis black ; bark purplish white. 



Hypnogorgia pendula, Duchass. & Michel. Corall. Antilles, Suppl. p. 113, 

 t. 5. f. 2. 



Hab. Guadaloupe. 



c. Bark formed of flat scales ; polype-cells prominent, tubular or bell- 

 shaped; scales very small. 



Fam. 16. CALLIGORGL41LE. 



Coral simple or flabellate, on one plane. Bark thin, formed of 

 flat, angular, granulous spicules. Polype-cells subcylindrical, in- 

 curved, placed in whorls or in lateral series, with one, two, or three 

 cells in a series. Axis hard, stony, calcareous, inarticulate, white 

 or grey. 



Primnoacea (part.), Milne- Edw. fy Haime, Corall. i. p. 140 ; Kolliker, 

 Ic. Hist. p. 135. 



Synopsis of Genera. 



* Polype-cells subcylindrical, incurved at the apex. 

 Baric white. 



1. CALLIGOEGIA. Coral fan-like ; branchlets pinnate. Cells in 



whorls. Stem and branches cylindrical. 



2. XIPHOCELLA. Like Callogorgia, but stem and branches com- 



pressed. 



3. PLTJMARELLA. Coral fan-like ; branchlets pinnate. Cells in two 



marginal series. 



4. CALLICELLA. Coral fan -like ; branchlets furcate, diverging. Cells 



in whorls. 



