G. ALCYONIUM. 
249 
or greyish; height from seven to twelve centime- 
tres. 
Indian Ocean. 
TUBEROUS. 
30. Alcyonium tuberosum. Yellowish and tube- 
rous ; summits frequently a little divided ; cells tu- 
bulous and approximate. 
Coasts of the Island of Mauritius. 
FIG-SHAPED. 
31. Alcyonium ficus . Mass in the form of a fig or 
pear ; almost oval, pulpy, livid, perforated at the 
summit, and presenting from one to three oscules. 
Mediterranean. 
CYLINDRICAL. 
32. Alcyonium cylindricum. A solid cylindrical 
mass, of the thickness of a finger, with oscules placed 
on a side range, and common to several cells. 
ROOT-FORMED. 
33. Alcyonium radicatum . Cells very small, 
and dispersed ; base with many clefts. 
Southern Africa. 
GELATINOUS. 
34. Alcyonium gelatinosum . Of various shapes, 
greenish and pediculated ; pedicle cylindrical, of the 
thickness of a crow-quill, and with a base; polypi 
transparent, with a funnel-shaped body, having a mar» 
ginated border, armed with twelve equal, long, and 
filiform tentacula. 
European Ocean. 
Cor. 2 I 
