FIVE NEW RECENT CRINOIDS FROM THE NORTH 

 PACIFIC OCEAN 



By AUSTIN HOBART CLARK . 

 Assistant, Bureau op Fisheries 



In 1900 the United States Fisheries steamer Albatross made a 

 small collection of about three hundred specimens of crinoids in 

 the waters about southern Japan, mostly in the vicinity of Sagami 

 Bay ; she also obtained crinoids in a single haul off the coast of 

 Kamchatka. The material was originally assigned to Prof. Hubert 

 Lyman Clark, of the Museum of Comparative Zoology at Cam- 

 bridge, Mass., for study ; but, owing to pressure of other work, he 

 has been unable to turn his attention to it. After my return from 

 Japan, he most kindly turned over to me the entire 1900 collection, 

 to work up in connection with the much larger one made in 1906. 



Although comparatively small, this 1900 collection has many 

 points of interest. Fourteen species are represented, three of which 

 were not found in 1906. A new Bathycrinus, of quite a different 

 type from B. pacific us, was secured off Kamchatka ; a new Zygo- 

 metra, of which the 1906 collection contains a single example so poor 

 I did not consider it wise to describe it, is represented by a number 

 of specimens. There are also three new species of Antcdon, two 

 of which are represented by a good series. These last all belong to 

 a small group of the genus, represented by Antcdon nana and A. 

 briseis, which appears to be characteristic of the region from Aus- 

 tralia and the Tonga Islands northward to Japan, corresponding to 

 the A. ha genii group, so abundant in the Caribbean Sea. Owing to 

 their small size and brittle nature it is somewhat difficult to obtain 

 specimens of these species, the smallest of all the Antedonidoe, in 

 good enough shape to justify description. Besides those already 

 described, there are a number of others which are known to me 

 from the study of specimens. 



BATHYCRINUS COMPLANATUS, sp. nov. 



This new species of Bathycrinus represents in the north Pacific 

 B. carpentcrii (Danielssen and Koren) of the north Atlantic, to 

 which it is closely allied. It is represented in the collection by 

 fourteen calyces, eighteen roots with more or less of the stem at- 

 tached, and many stem fragments of various lengths, all from 

 Albatross Station No. 3783, approximately 40 miles S. S. W. V 2 W. 

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