80 ZOOPHYTES. 
polyps in these is much less near the summits than in the A. argus; 
and budding, therefore, from the extending margin, approaches infe- 
rior budding in position and in character. Moreover, the strie of the 
surface, which are prominent lamelle in the dichastic Astreas (in 
which the lateral union is most complete), become almost obsolete in 
these species ; and they have, therefore, very nearly the characters of 
the Oculine among the Caryophyllide. The Echinopores are other 
examples of prominent polyps, and obsolescent strie to the coralla. 
The transition is thus so gradual that scarcely a line of demarcation 
can be laid down: and, in the A. ocellina, although the buds open 
near the extending margin on the upper surface, as in the Astreas 
and Echinopore, the cell has generally a porous connexion internally 
with a preceding one. 
Yet, in separating the A. argus and allied species from the Astreas, 
and placing them with the Caryophylliz and Gemmipore, as proposed 
by Ehrenberg, we should overlook the prominent affinities of the ani- 
mals themselves as well as of their coralla; and even also the true 
relations indicated by the mode of budding. 
In view of the above, it appears that the Caryophyllide ought to 
have prominent polyps, which is almost invariably the case; this is 
shown by their prominent calicles, except in certain species (Astroites), 
in which only the dases of the polyps secrete lime. 
81. Among the Cyathophyllide, there is exemplified a mode of 
terminal budding, which should properly be classed with lateral 
budding, as it is not connected with a prolate growth of the upper 
part of the polyp, and the buds proceed actually from the lower part 
of the animal, although opening upward. It is illustrated in the 
_ following outline figures, made as long ago as 1749, by Fougt.* 
Fig. 40. Fig. 41. 
Although old, they illustrate sufficiently well the mode of budding to 
which we refer. In figure 40, each succeeding polyp seems to come 
from the centre or mouth of the one below, the parent yielding its 
* Linn. Ameen. Acad., i., tab. i. 
