590 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



coverv Baj-, Grinncll Land. On examining the specimens brought back for Mr. W. 

 Percy Sladen by the Discovery, Dr. P. H. Carpenter believed that he had before him 

 the Comatula woodwardii which had been described by Barrett in 1857 from the Sound 

 of Skye and in the following year renamed Comatula celtica on account of the pre- 

 occupation of the specific name woodwardii. This species is therefore given as Antedon 

 celtica in the earlier references (Duncan and Sladen, 1877; Nares, 1878) to the Dis- 

 covery collections. 



Prof, von Marenzeller in 1878 recorded the specimens taken by the TegetlhnJ 

 under the name of Antedon sarsii. 



Before the publication of the final report on the Discovery collections, presented 

 as a memoir on the echinoderms of the Arctic seas west of Greenland, Carpenter had 

 learned the true relationships of Comatula celtica as a result of the rediscovery of J. 

 Miiller's Alecto phalangium by Marion and Ludwig independently in 1879, and Sladen 

 thus was able therein to describe the present species as new under the name of Antedon 

 prolixn (Duncan and Sladen, 1881). 



In 1884 Carpenter again described the species, under the name of Antedon hystrix, 

 from two specimens which had been dredged in the cold area of the Faroe Channel 

 by the Porcupine in 18G9, and one from Triton station 4. At the same time he described 

 a pentacrinoid from the cold area which he considered as possibly of this species. 



In 1885 Dr. Nansen described the myzostomes affecting this species which, on 

 Carpenter's authority, he called Antedon celticus. His material came from V^ringen 

 station 343, off southwestern Spitzbergeu. 



In 1886 Fischer recorded this species from Jan Mayen where he had found 3 small 

 specimens among vast numbers of Heliometra glacialis. For it he used the name quad- 

 rata proposed by Carpenter in 1884 for a small variety of Heliometra glacialis which 

 had been dredged by the Triton in 1882. In the same year Carpenter discussed the 

 dimorphism of the cim. In 1887 Carpenter recorded it from the Varna collections 

 under the name of Antedon prolixa, and Prof, von Graff, on Carpenter's authority, 

 corrected Nansen's identification. 



In the Challenger report (1888) Carpenter recognized both prolixa and hystrix 

 as valid species; but in 1891 he admitted the identity of the two, which was also an- 

 nounced by Hartlaub, acting on a suggestion by Carpenter, in the same jea.T. 



In 1892 Danielssen recorded this species from a large number of new localities 

 in the Norwegian Sea and about Spitzbergen, where it had been dredged by the 

 V^ringen, and in 1893 Rodger recorded it from off Cape Raper, Baffin Laud, and Bell 

 summarized all the British records. 



Pfefler in 1894 cited a number of new localities about Spitzbergen, where it had 

 been found by Iviikenthal, and in the year follownng Ohlin added other localities off 

 northwestern Greenland. 



The Prince of Monaco in 1899 mentioned it from east of Iceland in 650 meters 

 under the name of Antedon phalangium, the identification having been made by Prof. 

 Koehler; and in 1901 Koehler himself recorded it under tlie same name from 4 Prin- 

 cesse-Alice stations. 



In 1903 Dr. Th. Mortensen added a number of new localities in eastern Green- 

 land and described the ambulacral deposits in detail; Michailovskij discussed its occur- 

 rence about Spitzbergen; and Grieg recorded it from numerous stations of the Michael 



