24 ANNUAL REPORT OF THE 



REPORT ON THE ECHINODERMS. 



By Hubert Lyman Clark. 



For ten months of the year, I was absent on leave as acting 

 Professor of Zoology at Williams College. During the other 

 months, the work on the Museum collection of apodous holo- 

 thurians, begun last year, was continued. The Albatross col- 

 lections belonging to the U. S. National Museum were labeled and 

 packed for return. 



The accessions for the year were numerous and valuable, amount- 

 ing to more than 900 specimens of 185 species, of which 48 species 

 and 11 genera are new to the collection. The chief sources of this 

 new material were the U. S. National Museum, 250 specimens of 

 88 species, in return for identification of material; the Monaco 

 Museum, 105 specimens of 36 species, in exchange; the Bermuda 

 Biological Station for Research, 115 specimens of 15 species; 

 Mr. D. Thaanum, of Hilo, Hawaii, 98 specimens of 15 Hawaiian 

 species; and Miss Mildred Bush, 49 specimens of 9 species, from 

 Puget Sound. Other donors, to whom thanks are due, were Profs. 

 C. C. Engberg, W. A. Hilton, C. C. Nutting, and G. H. Parker, 

 Drs. Thomas Barbour, W. K. Fisher, A. G. Mayor, and Th. 

 Mortensen, Messrs. W. F. Clapp, F. Johansen, and W. M. L. 

 Wilson, and the South African Museum. 



