G. GALAX AURA, 
117 
ANNULAR. 
4. Galaxaura anniilata. Stem and branches 
marked with approximate rings ; extremities flat- 
tening by desiccation; colour yellowish green or 
inclining to red ; height five or six centimetres. 
Oriental seas. 
wrinkled. 
5. Galaxaura rugosa. Articulations marked 
with rings, and slightly wrinkled, cylindrical, and flat- 
tened at both extremities ; branches sometimes di» 
verging. 
American seas. 
MARGIN ATED. 
6. Galaxaura marginata . Branches flattening 
by desiccation, and turning up at their edges. 
Coasts of the Bahamas. 
stony. 
7. Galaxaura lapidescens. Articulations slightly 
marked, cylindrical, and hairy. 
Cape of Good Hope. 
SHRUBBY. 
8. Galaxaura fruticulosa. Branches cylindrical, 
contiguous, inclining to yellow, and pointed at the 
summits. 
Coasts of the Bahamas. 
HARD. 
9. Galaxaura indurata . Branches nearly con- 
tiguous, cylindrical, even, and diverging. 
Coasts of the Bahamas. 
