54 CORALS AND CORAL ISLANDS. 
Aulopora; but generally vertical tubes, grouped into large red 
masses, called, popularly, Organ-pipe coral. A portion of one 
of the latter—Tubipora syrnga D.—is represented in the 

TELESTO RAMICULOSA, V. 
first of the following figures, with its expanded polyps; and a 
polyp from the group much enlarged in the second figure. 
The papilla of the fringe are arranged closely together in a 

9 
1, 2. TUBIPORA SYRINGA, D.; 3. T. FIMBRIATA, D. 
, 
plane, so that it is not at first apparent that there is a fringe. 
The third figure represents, enlarged, the polyp of another Fee- 
jee species, the Zubspora fimbriata D. Such coral masses 
.re sometimes a foot or more in diameter, and the living zo0- 
