§2 ON THE ANATOMY OF DISTICHOPORA. 
In Blainv ille’s Manuel @ Actinologie p. 416, we find the follow. 
ing reference :—“ Animal unknown, contained in cellules of two 
lateral series on each side of the branches of areous 
piary, dendroid, fixed, composed of compressed branches, obtuss, 
roun su ee ae ee in the interior. 
35, No. ee 
genus has been established by Lamarck for a polypiary o 
m every known Millepore. In effect all its surface is cov 
with stelliform cellules, polygonal, extremely superficial, so ast 
be seen with difficulty, while on each side of the branches are 
us and scarcely solid.” Blainville places the cora ee 
class Polypiaria, sub-class Stony vk ot family Millepora 
His observations are incorrect in tw © particulars—first in regard 
ing the wart-like clusters as one of the kinds of cells; 
ondly, as to the polypiary not being solid. Dana also mentions 
the genus in his Synopsis of the Report on Zoophytes, 2nd 
New Haven, 1859, p. 15. “Genus Distichopora. Lamar 
Ramose, quite small, branched in a plane. Corallum firm, branches 
often a little co mpressed, and a cellular furrow on two 
sides extending over the extremity.” 
fig. 3, corallum nat, t. size; 3 a, extremity of a branch ma 
East Indies and Pacific, Paumotu, Archipelago. 
oP nlicios bites little the habitats of the older authors can be @ 
I don’t know where Blainville obtained his habitat. Ellis says the 
ex 
3in. high, with two rows of small pores each side the margin, 
of larger ones > anton’ s Li it. Surface rough, with here and there 
studs.” Turton Linneus, iv 
must be 
