MUSEUM OF COMPARATIVE ZOOLOGY. 17 



REPORT ON THE ECHINODERMS. 



By Hubert Lyman Clark. 



A considerable part of the year has been given to the study of 

 important collections from Australia, and a report has been pre- 

 pared on the echinoderms from the Abrolhos Islands, West 

 Australia, collected by Prof. W. J. Dakin. Some time was given 

 to preparing reports on two small collections of holothurians 

 belonging to the Canadian Geological Survey. A collection of 

 echinoderms from the Lower California region, made by the 

 Albatross in 1911, was studied for the American Museum of 

 Natural History, and a report on the same has been submitted. 

 A small collection of sea-stars, brittle-stars, and sea-urchins from 

 the Challenger Bank, Bermuda, proved of so much interest that a 

 report was prepared and published. 



More time than usual was given to the care and cleaning of the 

 collections, especially the dry Echini, which were all thoroughly 

 dusted. 



The accessions consisted of 221 specimens of 95 species, and 68 

 genera. Of these, 8 species and 2 genera, all sea-stars, were not 

 previously in the collection. The chief sources of this material 

 were the American Museum of Natural History, the Bermuda 

 Biological Station, Prof. E. L. Mark, Director, and Prof. W. J. 

 Dakin of Liverpool. Other donors to whom thanks are due are 

 the Bishop Museum, Honolulu, the Naturhistoriska Riksmuseum, 

 Stockholm, Prof. Madoka Sasaki, Sapporo, Japan, Dr. R. P. 

 Cowles, Dr. W. K. Fisher, and Dr. R. T. Jackson. 



