!)S Ml I.I.KTIN 82, UNITED STATES NATIONAL MUSEUM 



supplementary paper on the crinoids of the Hamburg Southwest Austrahan Expedi- 

 tion published in L913 I again recorded and described the specimen from Shark Bay 

 in the I liimburg Museum. 



Dr. August Reichensperger in L913 recorded and described two specimens from 

 the Aru Islands thai bad been collected by Dr. II. Morton, and at the same time 

 published a detailed description of a new species, which he called Zygometra mertoni. 



In a paper on the crinoids collected by the Endeavour off the coast of Western 

 Australia published in 1914, I remarked that from an examination of the types in 

 London I believed Anttdon multiradiata to be based upon specimens of Antedon 

 microdi8CU8 which had not attained full development, and said further that I would 

 now refer to Zygometra microdiscus the specimens I had recorded from northwestern 

 Australia mid from Lewis Island in the Dampier Archipelago. 



In L915 Prof. Frank \\\ Clarke and W. C. Wheeler, of the U. S. Geological Survey, 

 published an analysis of the inorganic constituents of the skeleton of this species, 

 their material consisting of fragments of the specimens collected by the Siboga at the 

 Am Islands. 



In 1916 Dr. Hubert Lyman Clark recorded and gave notes upon a specimen 

 dredged by the Endeavour off Port Curtis, and in the same year Dr. Robert Hartmeyer 

 again listed the specimens in the Berlin Museum and gave their catalogue numbers. 



In my report upon the crinoids of the Siboga Expedition published in 1918, 1 recorded 

 and gave notes upon a series of 14 specimens collected in the Aru Islands. From the 

 characters presented by young individuals in this series it seemed clear that Reichen- 

 sperger's Zygometra mertoni is merely the young of Z. microdiscus, and the former was 

 therefore placed among the synonyms of the latter. The analysis of the inorganic 

 constituents of the skeleton of this species was republished in an appendix to the 

 Siboga report. 



Dr. Torsten Gislen in 1919 recorded and described a specimen from Mjoberg's 

 station 13 and at the same time suggested that Bell's Antedon elegans should be re- 

 garded as merely a variety of microdiscus. 



Dr. Hubert Lyman Clark in 1921 published a general discussion of this species 

 based on published records, and in 1924 Dr. Gislen described in detail the pinnule 

 articulations. 



In 1 929 1 recorded a specimen from Baudin Island. 



In 1938 Dr. H. L. Clark recorded and gave notes on 25 specimens collected by 

 himself at Broome and Lagrange Bay, Western Australia, in 1929 and 1932. 



ZYGOMETRA ELEGANS (Bell) 



Plate 2, Figure 5; Plate 3, Figures 7, 8; Plate 4, Figures 9-12 



(Sec also vol. 1, pt. 2, fig. 710 (disk), p. 346.) 



m rlcgans Bell, Proc. Zool. Soc. London, 1882, p. 534 (specific formula).— P. H. Carpenter, 

 Proo. Zool. Soc. London, 1882 (1883), p. 746 (specific formula).— Bell, Report Zool. Coll. 

 II. M.S. \Uri, 1884, p. loo (specific formula), p. 162 (description; Port Molle; Thursday Island), 

 pi. 18, figs. B, Bo. -P. H. Carpenter, Challenger Reports, Zoology, vol. 26, pt. 60, 1888, pp. 23, 

 31, 48, 52, 53, 55, 56, 90, 94, 96, 97, 130 (discussion), 264-266 (identity with fluctuant), 276, 362, 

 366, 367, 375, pL B. figs. 1, 2; Joura. Linn. Soc. (Zool.), vol. 21, 1889, p. 305 (discussion, but not 

 the specimens from Mergui or the Philippines, which are Z. eomata).— Doderlein, Denkschr. 

 med.-nat. Gk rol B, pt. 5, 1898, p. 475 (Thursday Island; notes), pi. 36, fig. 1.— 



