G. GORGONIA. 
209 
mous ; branches long, very narrow, and bundled ; 
rind rather warty, with simple and oblong cells. 
Mediterranean. 
TWIGGY. 1 
38. Gorgonia sarmentosa. Branches loose, long, 
and flexible ; axe bristly ; rind cretaceous, and thickly 
covered with papillous or projecting polypi ; co- 
lour, an orange yellow; height from four to five 
decimetres . 
Found in the Mediterranean, and chiefly near the 
islands of Ivica and Formentera. 
PUSTULOUS. 
39. Gorgonia pustulosa. Branching; the principal 
branches, as well as the smaller ones, dispersed ; polypi 
placed at the summit of conical and pustulous excres- 
cences, which are divided in two almost lateral ranges 
by a small slightly projecting line ; rind of a bright 
red ; axe cylindrical ; height from two to three de- 
cimetres. — Plate 15. 
PURPLE. 
40. Gorgonia purpurea. Almost dichotomous; 
branches slender ; polypi warty. 
American seas. 
KNOTTED. 
41. Gorgonia nodulifera . Branches marked with 
small alternate knots, a little distant, rounded, ap- 
pearing spongy, and formed by polypous cells ; rind 
an orange yellow ; height from fifteen to sixteen cen- 
timetres. 
Cor, 2 D 
