THE ECHINODERMS OF CEYLON. 83 
THE ECHINODERMS OF CEYLON OTHER 
THAN HOLOTHURIANS. 
By Husprert LyMAN CLARK, 
Museum of Comparative Zoology, Cambridge, Mass., U.S.A. 
HROUGH the kindness of Dr. Pearson a collection of 
echinoderms belonging to the Colombo Museum was 
sent to me for examination in the Spring of 1914. There were 
no holothurians, but the other classes were well represented 
by ten species of crinoids, fifteen species of starfishes, eight 
species of brittle-stars, and twenty-two species of echini. Of 
these, one crinoid and one starfish seemed to be new to science. 
There were no data with any of the specimens, but all were 
from Ceylon. Many were taken on the pearl banks. 
The first notice of the echinoderms of Ceylon is that 
published by Bell (1882), listing nineteen species from Point 
de Galle. There were no holothurians ; and the single crinoid, 
one starfish, and one brittle-star were not identifiable. Three 
years later Walter (1885) reported on the echinoderms which 
Haeckel had collected in Ceylon, but (aside from holothurians) 
there were only fourteen species, and of one of these the identi- 
fication was not complete. Nevertheless, eight of the species 
were additions to Bell’s list. In 1887 Bell published a revised 
list of the echinoderms of Ceylon, in which he entered forty 
identified species, aside from holothurians. The following 
year Déderlein (1888), reporting on the Sarasins’ collection, 
added twenty-three starfishes, brittle-stars, and sea-urchins 
to the list. In 1890 Ludwig added three more brittle-stars, 
besides an unidentified amphiurid. Four years later Thurston 
(1894), in “* Notes on thé Fauna of the Gulf of Mannar,”’ gives 
eight additional species, and subsequent writers in scattered 
notes have listed a number of species. At the time of the 
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