82 CORALS AND CORAL ISLANDS. 
1. The Alcyonium tribe or Axucyonacea.—One of the 
forms under this tribe is represented in the annexed figure. 
It is from the Feejees (like most of the zodphytes figured 
by the author), and in the living state the polyps had the mid- 
dle portion of the tentacles pale brown, with the fringe deep 
brown. In another more beautiful species of the genus, from 
the same region, the Xenia florida D. (made Xenia Dane by 
Verrill, as it proved to be distinct from Lamarck’s species to 

XENIA ELONGATA, D. 
which the author referred it), the polyps are as large, but short- 
er, and the color is a.shade of lilac. These species differ from 
the larger part of the Alcyonia in having the polyps not re- 
tractile; the tentacles fold together, if the zodphyte is disturb- 
ed, but cannot hide themselves. 
The following figure represents another related species 

