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JAMAICAN ACTINIARIA. Parr II.—STICHODAOTYLINA AND ZOANTHE. 
By J. E. DUERDEN, Assoc. R. O.Se. (Lond.), Curator of the Museum of the Institute 
of Jamaica. 
(Piates X. To XV.) 
[Read Drcemprr 21, 1898. | 
THE first instalment of this series (1898) was limited to the Zoanthee occurring 
in the shallow waters around Jamaica, and ten species are described therein. As 
a result of trawling recently carried on over some of the deeper regions of the 
Caribbean Sea three other species of the same order, all belonging to the one 
genus Parazoanthus, have been procured. ‘The account of these is included at the 
end of the present contribution. 
This second communication describes seven species belonging to the mainly 
tropical order Stichodactylinz. Several have already been anatomically studied 
and described by Professor M*Murrich in his “‘ Actiniaria of the Bahamas” (1889); 
and it is interesting to compare the many points of resemblance and difference as 
revealing the features of stability or of variation within the same form. 
When the paper was practically completed I received the extremely valuable 
memoir by Professor A. C. Haddon, ‘ The Actiniaria of Torres Straits” (1898), in 
which, besides describing fifty-five species from that particular locality, the author 
attempts a classificatory revision of the whole group. 
Torres Straits has proved itself extremely rich in Stichodactyline. In so far 
as my results agree with those of Professor Haddon, I have been enabled to 
bring the present contribution into harmony with his conclusions. 
Mention must also be made of Dr. Casimir R. Kwietniewski’s ‘“ Actiniaria 
von Ambon und Thursday Island ” (1898), an important paper also devoted to 
tropical Actiniz, published while Haddon’s memoir was going through the press, 
and therefore not referred to by him. 
Asit is not likely that Professor Haddon will, for some time, conduct other such 
elaborate investigations in this branch of zoology, he has most generously placed 
at my disposal his microscopic preparations of species already described by him, 
and has also lent me portions of his extensive collection of Actinozoan literature, 
favours specially appreciated in such an isolated position. For these, and for other 
encouraging help, I here beg to express my sincerest gratitude. 
TRANS. ROY. DUB. SOC., N.S. VOL. VII., PART VI. X 
