WESTERN AUSTRAIJAN ECHINODERMS 
BY 
W. B. ALEXANDER, M.A. 
In the two papers which follow (Crinoids, by A. H. Clark, and 
Echinoderms, by H. L. Clark) will be found descriptions of most of 
the Echinoderms in the Western Australian Museum. To prevent 
any misunderstanding it seems necessary to mention the circum- 
stances under which the papers were written. 
During June, 1912, the F.I.S. Endeavour was engaged in 
trawling operations off the Western Australian coast between 
Fremantle and Geraldton, and the Director obtained permission 
from the Federal authorities for the writer to accompany her on two 
of her trips to obtain specimens for this Museum. 
Perhaps the most striking feature of the hauls made by the 
Endeavour was the very large number of Crinoids which were 
brought up on many occasions. In number of individuals they 
surpassed all the other groups of Echinoderms put together. In 
view of the fact that Mr. Austin H. Clark, of Washington, had 
recently published a paper on the Crinoids of Australia, the collec- 
tion was sent to him for identification, and his report on this collec- 
tion constitutes the first of the papers which follow. 
In the meantime, Mr. H. Lyman Clark, of Harvard, had 
offered to determine the Echinoderms already in the Museum, and 
the remainder of the Echinoderms including all those obtained by 
the Endeavour, except the Crinoids, were therefore sent to him. 
A few species which had been named by the authorities of the 
Australian Museum in Sydney, and a few of the Endeavour speci- 
mens of the same species, together with some Crinoids which had 
previously been identified by Mr. A. H. Clark, along with those 
collected by the Hamburg Expedition, were not sent away. 
In the introduction to his paper dealing with this material Mr. 
Clark drew a number of conclusions as to the relative proportions 
