A MONOGRAPH OF THE EXISTING CRINOIDS 241 



In the Challenger report published in 1888 Dr. P. H. Carpenter, who had examined 

 in Berlin the specimens collected by Hemprich and Ehrenberg and described by 

 Muller, and also other specimens in the British and Paris Museums, gave some 

 additional information regarding this species in the form of notes incorporated in 

 the key to the species of the Savignyi group of Antedon. He said that in addition to 

 being found in the Red Sea it also occurs at Muscat and Kurrachi but is not known 

 to extend farther eastward. The first locality was represented by a specimen in the 

 Paris Museum and the second by specimens in the British Museum, although he did 

 not mention this. The specimens from Kurrachi represent H. africana, and there is 

 a possibility that the specimen from Muscat also represents that species. 



Dr. Clemens Hartlaub in 1891 gave an excellent figure of one of Muller's original 

 specimens which had been received in exchange by the Gottingen Museum, and 

 mentioned another of Muller's original specimens which was already in that Museum. 



In my first revision of the old genus Antedon published in 1907, this species was 

 referred to the new genus Himerometra. 



Herbert C. Chadwick in 1908 recorded this species from Suez Bay, Ul Shubuk, 

 and Khor Shinab, giving the essential characters of his specimens and the color in 

 life, and mentioning the commensal ophiurans. 



In a review of the family Himerometridae published in 1909 I transferred this 

 species to the new genus Heterometra. 



In a paper on the crinoids of the Paris Museum published in 1911 I recorded a 

 specimen from Muscat and gave a partial description of it. This is the specimen 

 upon which P. H. Carpenter based his mention of Muscat as a locality for the species 

 in 1888. In a paper on the crinoids of the coasts of Africa published in the same year 

 Tor was added to the known localities for this species, on the basis of a specimen in 

 the Museum fur Meereskunde in Berlin. 



In my memoir on the crinoids of the Indian Ocean published in 1912 I recorded 

 and described one specimen from Kurrachi and seven from the Straits of Ormuz and 

 also gave a summary of all the known localities. Reexamination of these eight 

 specimens disclosed the fact that the basal segments of the proximal pinnules bear 

 high carinate processes, and further study has shown that they are representatives 

 of H. ajricana. 



In a paper on the crinoids of the Berlin Museum published in the same year I 

 described at considerable length three of Hemprich and Ehrenberg's specimens from 

 the Red Sea, one from Tor in the Museum fur Meereskunde and one without locality. 



In 1913 in a paper on the crinoids of the British Museum I recorded two small 

 specimens from the Gulf of Suez and described seven from Kurrachi. These last, 

 which represent not H. savignii but H. africana, had previously been examined by 

 P. H. Carpenter, and the mention of Kurrachi as a locality for this species in the 

 Challenger report is based upon them. In the same year Boulenger described the 

 myzostomes from the specimen from Ul Shubuk recorded in 1908 by Chadwick. 



HETEROMETBA NEMATODON (Hartlaub) 



Plate 28, Figure 117 



Antedon milberti (part) Bell, Report Zool. Coll. H. M. S. Alert, 1884, p. 156 (Port Molle, 12-20 

 fathoms).— A. H. Clark, Smithsonian Misc. Coll., vol. 61, No. 15, 1913, p. 23 (identity). 



