26 



ANNUAL REPORT OF THE 



REPORT ON THE ECHINODERMS. 



By Hubert Lyman Clark. 



The routine work has consisted chiefly of the identification and 

 cataloguing of the extensive additions received from various 

 sources. These additions total nearly 3,300 specimens. 



Aside from this work, the preparation of reports has occupied 

 the time. The monograph of Recent Echini begun by Mr. Agassiz 

 and myself in 1904 was completed and the final portion, Part 6, 

 dealing with the spatangoids, was published in March. This 

 part contains an index to the entire work. Reports were also 

 completed on the ophiurans collected by the Albatross in 1899- 

 1900 and in 1904-1905, and on new or notable ophiurans in the 

 M. C. Z. collection. Progress has also been made on a monograph 

 on the echinoderms of South Africa. 



The month of June was spent at the Tortugas Laboratory of the 

 Carnegie Institution, where more than 800 specimens of 71 species 

 of echinoderms were collected, half a dozen of which are new, not 

 only to the M. C. Z. collection, but apparently to science also. 

 Some very interesting additional species were collected near Key 

 West, Florida. Besides this material, which has been identified 

 and catalogued, the chief accessions of the year were the collec- 

 tion from Tobago (referred to in last year's report) and series of 

 spatangoids and of holothurians from the U. S. National Museum, 

 in return for the identification of material. Specimens were 

 received from Messrs. F. N. Balch, W. J. Crozier, W. A. Hilton, 

 E. G. Humphrey, R. T. Jackson, W. M. Mann, A. G. Mayer, 

 Alvin Seale, and D. Thaanum. At the end of the year, the collec- 

 tion of echinoderms was made up as follows: — 





No. of Genera 



No. of Species 



No. of Specimens 



Crinoids 



Asteroids 



Ophiurans 



Echini 



Holothurians 



45 

 122 

 144 

 132 



59 



164 



538 

 777 

 467 

 372 



2,936 

 12,973 

 24,351 

 44,620 



5,118 



Totals 



502 



2318 



89,998 



