48 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



100 mm. long. There are two IIIBr series, both externally developed. P 2 has 19-21 

 segments, of which the basal are carinate. The cirri are XX, 32-35. Another has 

 14 arms 90 mm. long, and the cirri XIV, 34-41. A third has about 15 arms. The 

 fourth, and smallest, specimen has 12 arms, one IBr axillary bearing a single IIBr 

 series, which bears externally a IIIBr series. 



Localities. Mauritius [Bell, 1892; A. H. Clark, 1907, 1911, 1912, 1913] (4, B. M.). 



Mauritius; Prof. K. Mobius [A. H. Clark, 1911, 1912; Hartmeyer, 1916] (1, 

 Berl. M., 6375 [5349]). 



Seychelles; 71 meters; J. Stanley Gardiner, Sea Lark Expedition [Bell, 1909; 

 A. H. Clark, 1911, 1912, 1913] (4, B. M.). 



Geographical range. Mauritius and the Seychelles. 



Bathymetrical range. From shallow water down to 71 meters. 



History. This species was first described under the name of Antedon emendatrix 

 by Prof. F. Jeffrey Bell in 1892, from specimens that had been sent to the British 

 Museum from Mauritius. 



In my first revision of the old genus Antedon published in 1907 emendatrix was 

 referred to the new genus Himerometra. 



In 1909 Professor Bell recorded, under the name of Antedon spicata, some addi- 

 tional specimens that had been collected by the Sea Lark under the direction of Prof. J. 

 Stanley Gardiner at the Seychelles in 39 fathoms. He said in a footnote that he was 

 in some doubt as to the correctness of this identification; P. H. Carpenter described 

 the species (Antedon spicata) in 1881 from, it would appear, a single specimen, and no 

 subsequent writer that he knew of had ever mentioned it. 



In 1910 I examined at the British Museum the specimens recorded by Bell in 

 1892 from Mauritius and in 1909 from the Seychelles, and at the Berlin Museum 

 studied an almost perfect specimen that had been collected by Prof. Karl Mobius at 

 Mauritius. In 1911 I redescribed the species on the basis of the last mentioned 

 specimen under the heading Cenometra emendatrix, giving under this heading the 

 original reference, and also the reference to Bell's Antedon spicata recorded in 1909. 

 I appended a summary of the characters of the eight specimens hi the British Museum, 

 the four original specimens and the four from the Sea Lark expedition. In a paper 

 on the crinoids of the Berlin Museum published in 1912 I formally recorded Mobius's 

 specimen from Mauritius, and in my memoir on the crinoids of the Indian Ocean 

 published in the same year gave the synonymy and habitat of the species. In a 

 paper on the crinoids of the British Museum published in 1913 I recorded and gave 

 notes on the type specimens from Mauritius, and on the four collected by the Sea Lark 

 in the Seychelles. 



Dr. Robert Hartmeyer in 1916 corrected the catalog number of the specimen 

 from Mauritius in the Berlin Museum recorded by me in 1912. 



Genus COTYLOMETRA A. H. Clark 



Oligometra (part) A. H. CLARK, Smithsonian Misc. Coll., vol. 52, pt. 2, 1908, p. 221. 



Cotylometra A. H. CLARK, Journ. Washington Acad. Sci., vol. 6, No. 5, 1916, p. 116 (diagnosis; 

 genotype Oligometra gracilicirra A. H. Clark, 1908); Unstalked crinoids of the <Sz6offa-Exped., 

 1918, p. Ill (in key), p. 112 (in key), p. 128 (key to the included species). GISLN, Kungl. 

 Fysiogr. Sallsk. Handl., new ser., vol. 45, No. 11, 1934, p. 18. 



