PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 407 



P. H. Carpenter's Challenger report, published in 1888, included a monographic 

 account of this species in which all existing information was summarized and much new 

 information brought out. In the same year Dr. Th. Holm recorded it from the Fylla 

 dredgings in Davis Strait, and Ganong noted its occurrence along the shores of eastern 

 Canada. 



In 1889 Dr. Otto Hamann and Prof. Perrier compared the anatomy of glacialis 

 with that of the species of Antedon, Prof. Percival de Loriol [-Fort] compared it with 

 fossil species, and the Kev. D. Honeyman cited its occurrence off HaUfax. 



In 1891 P. H. Carpenter published an extended account of this species and of the 

 other Arctic comatulid, Hathrometra (i.e. Poliometra) prolixa. He devoted himself 

 especially to the defense of his quadrata, in answer to Levinsen, who in 1886 had stated 

 that it is merely the young of glacialis. In the same year Cu^not considered certain 

 points in the morphology. 



The report on the crinoids of the V^ringen (Norwegian North Atlantic) expedition 

 was published bj' Prof. D. C. Danielssen in 1892. This report is chiefly devoted to a 

 detailed discussion of Ilycrinus carpenteri, and this species is merely listed from a number 

 of stations. In the same year Prof. Bell gave a summary of the records from the 

 British Seas and Seeliger compared its anatomy with that of Antedon adriatica. 



In 1893 Mr. Alexander Rodger published an account of the material he had secured 

 in Davis Strait while on the whaler Esquimaux, and in the following year Prof. Georg 

 Pfeffer recorded the specimens secured by Kiikenthal in Spitzbergen in 1889. 



Dr. A. Ohlin in two contributions, published in 1895, recorded the specimens which 

 had been collected in the previous year by the Falcon, on which ship he had been the 

 naturalist, and Hartlaub discussed the geographical and bathymetrical distribution 

 of this species and compared it with some specimens from Panama which he identified as 

 [Florometra] rhomboidea [since referred to F. tanneri]. 



The Prince of Monaco in 1899 mentioned locaUties at which this species had been 

 taken by the Princesse Alice at Spitzbergen, and in the same year Dr. Fritz Schaudinn 

 cited it from eastern Spitzbergen, and both Prof. Hubert Lud%vig and Dr. Arnold E. 

 Ortmann discussed its bearing, in connection with the related Antarctic species, or the 

 question of bipolarity. 



In 1900 Dr. Clemens Hartlaub and Prof. Ludwig Doderlein gave this species from 

 a nimiber of Olga stations about Spitzbergen, and Prof. Jules Richard recorded it from 

 Sassen [Temple] Bay, Spitzbergen, in 102 meters, where it had been dredged by the 

 Princesse Alice. Prof. N. M. Knipovich again recorded it from the ]Murman coast. 



In the following year Prof. Knipovich listed it from a number of Yermak stations, 

 Prof. Rene Koehler gave a detailed account of the material collected abovit Spitzbergen 

 by the Princesse Alice, Prof. W. M. Rankin described the specimens collected in northern 

 Greenland by the Princeton Expedition of 1899, Dr. G. Kolthoff recorded those brought 

 back by the Frithiof from northeastern Greenland, Dr. J. F. ^Yhiteaves listed the re- 

 cords for eastern Canada, and Mr. Frank Springer compared the wide distribution of 

 the species with that of Uintacrinus. 



In 1903 Dr. Theodor Mortensen recorded this species from a number of localities 

 in eastern Greenland, and described and figured the side- and covering-plates, showing 

 barentsi to be merely a variety of H. glacialis, and Dr. M. Michailovskij described 

 the material accumulated by the Yermak, Bakan, and Ljedekol II during the expeditions 

 to Spitzbergen for the purpose of measuring an arc of the meridian. 



