CLASS 1IL— ORDER I1L 
GENERA AND SPECIES* 
Xr ee-like Folypidoms, formed of a rind analogous 
to that of the Gorgonias, but with an articulated axe ; 
the articulations are alternately horny or corky, and 
calcareously stony* 
MELITEA, 
A tree-like, knotty Polypidom, with branches al- 
most always anastomosed ; articulations stony, and 
substriated ; between the knots spongy and swelled ; 
rind cretaceous, very thin, and friable on desiccation ; 
polypi on the outside, or in tubercles. 
It has been generally observed in this genus, that 
a horny articulation is constantly united to a stony, 
hard, and compact one ; should the former be spongy, 
the latter is then found porous and not solid. In the 
first case, the horny articulation is easily distinguished 
