ON THE ANATOMY OF DISTICHOPORA. 57 
enough to make him suspect the affinity of the Stylasteride to the 
. Hydroids, Ever since the observations of Agassiz on Millepora 
a 
To follow the description of Mr. Moseley, in his charming Notes of 
through the smallest part of the coral. Two kinds of polyps in- 
habit the two-sized pores. The larger are short, stout, cylindrical 
; polyps, with four tentacles, a mouth, and a stomach. ey are 
and the pores Dactylopores. All the polyps of the Colony are at 
their bases connected wi i i 
be the discoverer of all the analogies of the Stylasteride, to which 
the Milleporide gave only an imperfect clue. During the voyage 
genera where the style is found in both, and others where it is 
found in neither. For the process of reproduction each colony or 
coral is of a separate sex, male or female. In the fe 
developed into a cylindrical larva or planula, when it swims off 
and develops itself, when attached, into a new stock. The male 
organs are in ampulle also, and permatozoids. In so 
genera the pores are irregularly scattered, in others the dactylo- 
(Spore are grouped round the tropores either 
Baser 
a), regularly but few (Allopora), regular and 
pumerous (Allopora, Astylus), few and in a linear series 
( Distichopora). 
G 
