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SUBORDER IL ALCYONARIA. 
Genus I.— EHIZOXENIA.— -Ehrenberg. 
Carnose Alcyonidae; polyps not retractile and budding by 
means of creeping filiform sboots. 
1. Rhizoxenia thalassantha (iesson,) Ehrenherg. — Body claviform, lon- 
gitudinally striate, tentacles filiform, pinnate. 
2. Rhizoxenia rosea (Philippi,) Dana. — Polyps of the zoophyte few (6 
to 1 0), each about 2 lines long ; color rose-red ; tentacles fringed with papillaB. 
Near Naples, incrusting barnacles, &c. — Philippi. 
3. Rhizoxenia primula (Dana). — Pale rose or lilac ; polyps 4 to 5 lines 
high, tentacles not fringed, each nearly 1^ lines long, papillse scattered, obso- 
lescent, verruciform. 
Plate 57, fig. 2, polyps, natural size ; 2 a, one of them, enlarged. — Ovolau, 
one of the Feejee Islands, along the shores, in shallow water. — Exp. Exp. 
Genus II.— ANTHELIA.— Savigny. 
Carnose, explanato-gemmate Alcyonidae ; polyps not retractile. 
1. Anthelia glauca (Savigny). — Glaucous, pale bluish; polyps subven- 
tricose below, sometimes becoming coalescent. 
Red Sea. — Savigny. 
2. Anthelia strumosa (Ehrenherg). — Glaucous; polyps inflated below 
the mouth, strumous, an inch in height. 
Red Sea. — Ehrenherg. 
3. Anthelia purpurascens (FlArenSerg). — Exterior pale violet ; tentacles 
purplish violet within ; papillae on each side in three series. 
Red Sea. — Ehrenberg. 
4. Anthelia Desjardiana (Templeton,) Dana. — Pale livid blue; widely 
spreading, with the base i of an inch thick ; polyps very prominent, sides 
horizontally wrinkled. 
Isle of France. — Templeton. 
Genus III. — XEISTIA.— Savigny. 
Fleshy Alcyonidse, erect lobed and subramose, polyps sub- 
acrogenous, budding both at base and from both sides. 
