No. i] ACTINIARIA OF THE BAHAMAS. 49 
I was not able to make out in this form the arrangement of 
the mesenteries. The longitudinal and parieto-basilar muscles 
are as slightly developed as in Rhodactis, and, as in that form, 
the inter- and intra-mesenterial spaces are about equal in width, 
I counted about 28 pairs of mesenteries in a fair-sized speci- 
men; of these 12 were perfect and the rest imperfect, the 
latter usually but not always alternating with the perfect ones. 
I could not distinguish with certainty the directives. None of 
the specimens examined possessed reproductive organs. The 
endoderm cells of the mesenteries, though mostly glandular, 
were by no means so markedly so as in Rhodactis, nor did I 
observe any of the large nematocysts characteristic of that 
form. 
This species I observed in the process of fission. In one 
specimen the process was nearly completed, the two individuals 
being quite distinguishable, and united to each other throughout 
an extent equal to about half the diameter. In another case, 
however, the process had not extended nearly so far, the only 
evidence of the fission being the presence of two distinct 
peristomal elevations, each with a mouth, upon the disc, and 
a crowding of the rows of disc tentacles on the portion of the 
disc common to the two mouths. 
Duchassaing and Michelotti (60) describe this form under 
the name of Azcordea florida. The genus is defined as consisting 
of forms which, though simple when young, become composite 
when their development is complete; z.¢.,at this stage the animals 
have five mouths situated at the centre of the disc, which is 
elsewhere covered with short obtuse tentacles, not completely 
retractile. In their second paper (’66) they state their belief 
that the genus presents relations to Dzscosoma on account of the 
tentacles being non-retractile, and the disc not being able to 
close completely. The single species, which they describe as 
being common at St. Thomas, is of a dark green or blue, pre- 
senting a variety with reddish tentacles. The figure of it which 
they give shows that it is identical with that just described, not- 
withstanding that no notice is taken of the marginal tentacles. 
The occurrence of several mouths on the disc is certainly a 
peculiar feature, and one that would, if no other forms having 
the same arrangement of the tentacles were known, lead one to 
make it a generic distinction. There can be no doubt, however, 
