34 CALLICxOEGIADJE. 



56. HYPNOGORGIA. 



Characters of the family, • 



Hypnogorgia, Dt/chass. ^- Michel. Cor all. Antilles, Suppl. p. 115. 



MM. Duchassaing and Michelotti {I. o.) 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, DucJiass. & Michel. Corall. Antilles, Suppl. p. 113, 

 t. 5. f. 2. 



Hah. Guadaloupe. 



c. li a rh formed of flat scales ; polype-cells prominent, tubular or bell- 

 shaped ; scales very small. 



Fam. 16. CALLIGORGIAD^. 



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

 flat, angular, granulous spicules. Polype-ceUs 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-Edto. tf Haime, Corall. i. p. 140; Kollikcr, 

 Ic. Hist. p. 135. 



Synopsis of Genera. 



* Pohjpe-ceTls subcylinclrical, incurved at the apex. 

 Baric white. 



1. Calligorgia. Coral fan-like ; branchlets pinnate. CeUs in 



whorls. Stem and branches cylindrical. 



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



pressed. 



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



marginal series. 



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



in whorls. 



