206 
J. E. DuserpEN—Jamaican Actiniaria: 
It is evident that we have in West Indian waters many species of small Zoan- 
thids commensal with sponges; and, where such very few external characters are 
available for diagnostic purposes, their identification with previously described 
forms must be a matter of some uncertainty, unless one has the actual types or a 
number of the different species for comparison. When this can be done it will be 
found much easier to unite supposed new forms with the older than to rectify the 
confusion of synonymy. 
Now that a few more representatives of these commensal anemones are avail- 
able for comparison the present species appears to agree more closely with 
Duchassaing and Michelotti’s Gemmaria Swift than does the form I identified as 
such in the former paper on the Jamaican Zoanthece. 
1767. 
1786. 
1788. 
1817. 
1834. 
1846. 
1846. 
1847. 
1850. 
1857. 
1860. 
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Mei}, do 8 
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Gme.in, J. F.: 
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Ehrenberg, C. G. : 
“¢ Die Korallthiere des Rothen meeres.’’—Berlin. 
Dana, J. D.: 
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« Animaux Radiaires des Antilles.’’—Paris. 
Minne-Hpwarps, H. : 
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