RECENT UNSTALKED CRINOIDS. 129 
NOTE XXV. 
DESCRIPTIONS OF TWENTY NEW RECENT 
UNSTALKED CRINOIDS, BELONGING TO THE 
FAMILIES ANTEDONIDAE AND ATELECRINIDAE, 
FROM THE DUTCH EAST INDIES 
BY 
AUSTIN H. CLARK. 
The work of the steamship »Siboga” among the islands 
of the East Indian Archipelago resulted in the discovery 
of many new species of unstalked crinoids. In view of the 
large amount of work necessary in assembling and digest- 
ing the data accumulated on these, and especially on the 
species already known, it has seemed advisable to publish 
in advance preliminary diagnoses of the new forms in order 
to guard against possible anticipation. 
In the present paper the new species belonging to the 
families ANTEDONIDAE and ATELECRINIDAE, including among 
them the most striking of those collected by the » Siboga”’, 
are considered. Ali of the new species will be described 
in greater detail and figured in the final memoir on these 
animals in the »Siboga” series '). 
Family ANTEDONIDAE. 
Antedon moluccana, sp. nov. 
The centrodorsal is low hemispherical, the bare dorsal 
pole very slightly convex with an obscure broadly rounded 
median tubercle surrounded by obsolete cirrus-sockets, 
1.5 mm. in diameter. 
1) See for the explanation of the Nos of the various ,,Stations” page 156. 
Notes from the Leyden Museum, Vol. XXXIV. 
9 
