24 ANNUAL REPORT OF THE 



REPORT ON THE ECHINODERMS. 



By Hubert Lyman Clark. 



During the first part of the year, the report on the sea-stars of 

 Mr. Agassiz's expeditions in the Tropical Pacific, on the Albatross 

 in 1899-1900 and 1904-1905 was completed. Since then the 

 work has been concerned wholly with the Museum's collections. 

 This work has been for the most part along three lines: — 1, Re- 

 examination and identification of holothurians, including prepara- 

 tion of the descriptions of a number of new species; 2, A complete 

 revision of the Linckiidae or more correctly Ophidiasteridae; 

 following the completion of this work, the Museum collection, 

 1,270 specimens of fifty-four species, was relabeled and recata- 

 logued; 3, A similar revision was completed of the Ophiocomidae. 

 In connection with the ordinary curatorial work, the alcoholic 

 collections were gone over thoroughly. 



The accessions for the year were sixty-eight specimens alto- 

 gether, and none of these added a species new to the collection. 

 The new material was received as gifts; the most important con- 

 sisted of thirty-nine specimens from Samoa, from Mr. John W. 

 Mills; and twenty-four specimens from Hawaii, from Mr. D. 

 Thaanum. The other donors were Messrs. A. B. Ulrey and 

 W. A. Hilton. 



