G. ALCYONIUM. 
245 
bands or fillets, which climb or twine on the Spongia 
Deltoidea and Loricaris ; warty protuberances, ri- 
sing very little, pierced at the centre by an oscule 
frequently plaited in rays. 
Seas of America. 
TRIANGULAR. 
11. Alcyonium trigonum. A fleshy mass, rather 
thick, compact in a dry state, trigonal, whitish, and 
porous both on the inside and outside. 
PERFORATED. 
12. Alcyonium foratum. Oblong, and nearly cy- 
lindrical ; surface almost reticulated ; oscules large, 
and dispersed; substance spongy, firm, and not 
flexible. 
SIEVE-LIKE. 
13. Alcyonium cribrarium. In large envelopes, 
whitish, and bored with non-projecting oscules, which 
are terminated by tubulous cells. 
PHALLIC. 
14. Alcyonium phalloides. Pedicle short and 
thick, supporting wide branches, which are tortuous, 
lobed, and collected in dense packets ; oscules small, 
and dispersed. 
Oriental seas. 
PYRAMIDAL. 
15. Alcyonium pyramidale . Of a conical or cy- 
lindrical form ; interior substance fleshy and red. 
Mediterranean. 
