ORDER POLYPI POLYPIFERI. 51S 
DISTICHOPORA, 
In which the pores, more marked, are ranged on both sides of 
the branches. (Millepora violacea, Pall.) 
Among those in which the pores are equally divided, we 
distinguish 
MILLEPORA, (proper) Lam., 
Solid, diversely branched. (Mill. alcicornis, Pall.) 
When their pores are not apparent, as sometimes happens, 
they arenamed NULLIPORA. (Millepora informis, L., &c.) 
EScHARA, Lam., 
Which have expansions flatted like leaflets. (Millepora 
foliacea, Ell., &c.) 
RETEPORA, Id., 
Which are eschare, pierced with meshes. (MMJ7llepora cel- 
lulosa, Ell.) 
ADEONA, Lamouroux, 
Which are eschare supported on an articulated stem. There 
are some entire, and some pierced with meshes. (Ad. grisea, 
Lamour.) 
The third tribe, 
POLYPARIA NANTIA, 
Whose axis is stony, but not fixed. 
PENNATULA, L., 
Have the body common, free from all adherence, of a regular 
and constant form, and able to move by the contractions of 
its fleshy part, and also by the combined action of its polypi. 
This body is fleshy, susceptible of being contracted, or dilated, 
VOL. XII. Ll 
