SUBORDER II. ALCYONARIA. 
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Genus I. — EENILLA. 
Free, explanate, nnifacial ; polyps scattered, retractile. 
1. Renilla AMERICANA {ElUs). — Renifomi, nargin acute ; behind caudate, 
with the caudal appendage, below, longitudinally sulcate. 
West Indies. Off Rio Janeiro. — Exp, Exp. 
Genus II.— YEKETILLUM.— Cuvier. 
Stout cylindrical, and not branched ; polyps scattered, re- 
tractile. 
1. Veretillum cynomorium [Pallas,) Cuvier. — Orange-colored, stout cyl- 
indrical 0 8111 iiich in diameter) ; base subgranulous, polyps whitish, axis very 
slender. 
Mediterranean Sea. — Pallas, Lamarck, Edwards. 
2. Veretillum phalloides [Pallas,) Cuvier. Cinereous, scarcely as 
large as the finger, nearly 6 inches long, cylindrical, subclavate; axis subu- 
late, quadrangular. 
East Indies, near Amboyna. 
Pennatula stellifera [Muller). — Veretillum clavatum 
[Leuckart). 
Genus m.—YIRGULARIA.— Lamarck. 
Long filiform Pennatulidae, having short or obsolete polypifer- 
ous pinnules ; axis somewhat stony. 
1. ViRGULARiA mirabilis [Muller,) Lamarck. — Filiform, 6 to 12 inches 
long ; pinnules oblique, arcuate, lax, mostly alternate ; axis calcareous, white, 
terete, fragile. 
Seas of Norway and Britain. 
2. Virgularia juncea [Pallas). — Filiform, very long (2 to 3 feet), base 
vermiform, 5 to 6 inches long, a little stouter than the rachis; pinnules 
arranged in two opposite series, very short; when contracted, transverse, 
close appressed, and often a little remote, resembling series of raised 
wrinkles ; axis terete, calcareous, fragile. 
The Indian Ocean. — Rumphius, Pallas. Esper, who received his speci- 
mens from M. Chemnitz. 
