THE ECHINODERMS OF CEYLON. 83 THE ECHINODERMS OF CEYLON OTHER THAN HOLOTHURIANS. By Hubert Lyman Clark, Museum of Compctrative Zoology, Cambridge, Mass., U.S.A. rr^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 M'ere 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 Doderlein (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 the 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 2 6(8)15
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