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RECORDS OF W.A. MUSEUM. 
THE ECHINODERMS 
OF THE 
WESTERN AUSTRALIAN MUSEUM. 
HUBERT LYMAN CLARK, Ph.D. 
Museum of Comparative Zoology, Cambridge, Mass., U.S.A. 
The authorities of the Western Australian Museum at Perth, 
having entrusted to me their collection of echinoderms for identifica- 
tion and study, I beg to offer here my sincere thanks for the honor 
they have thus done me. My obligation to Mr. Bernard H. 
Woodward, the director of the Museum, is particularly heavy, for 
his uniform courtesy and for the many favours he has shown me. 
The collection itself is not a large one but it is of extraordinary 
interest, not only for some of the hitherto undescribed species it 
contains, but also for the light it throws on the range of many East 
Indian and Australian echinoderms. The number of specimens 
sent me is only gg, but the number of species is more than half that, 
no less than 58 being represented. The collection is thus a selected 
one, usually only one or two specimens representing each form. 
There is thus no opportunity for me to comment on the variability 
of these West Australian species. 
The collection is notable for the large number of new and 
remarkable species it contains. There are no new crinoids, but five 
starfishes are undescribed, and one of these represents a new and 
remarkable genus, while three others are notably distinct forms. Of 
theophiurans, four are new, one representing a new genus and the 
other three being very different from any near allies. 
Of the echini, four, and probably five, are undescribed, and it is 
interesting to note that one of these is a cidarid, and another a 
centrechinid, the two oldest groups of Recent echini, while the other 
two are clypeastroids, a group particularly abundant and wide- 
spread in Tertiary times. Of the holothurians, certainly two, and 
