96 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



Remarks. The foregoing description is a compound of the original one with the 

 supplementary comments of H. L. Clark (1923) and Gislen (1938). 



Localities. Gauss; Simon's Bay, Cape of Good Hope; July 16, 1903; July 29, 

 1903 [A. H. Clark, 1915] (4, U.S.N.M., E. 386; Berl. M.). Type locality. 



Pieter Faure; No. 14905; Saldanha Bay, west side of Cape Province; 18-25 meters; 

 sand and mussel beds [H. L. Clark, 1923; Gislen, 1938]; (1, M.C.Z.; 15, S. Afr. M.; 

 1, C.M.?). 



Table Bay; 18-26 meters; Prof. O. Carlgren, Oct. 8, 1935 [Gislen, 1938]. 



Table Bay, off Blaauberg; 9 meters; sand and rock; Cape Town University 

 Ecological Survey [A. M. Clark, 1952] (3, B.M.). 



Table Bay flat. 3349' S., long. 1827'30" E.); 15 meters; sand and rock; Cape 

 Town University Survey [A. M. Clark, 1952] (9, B.M.; 3, C.T. Univ.). 



Table Bay; Cape Town University Survey [A. M. Clark, 1952] (3, B.M.; 1, C.T. 

 Univ.). 



False Bay Gat. 3409' S., long. 1827' E.) ; 22 meters; sand; Cape Town University 

 Survey [A. M. Clark, 1952] (6, B.M.). 



False Bay, Fishoek Bay; 8 meters; sand; Cape Town University Survey [A. M. 

 Clark, 1952] (1, B.M.). 



Durban [A. H. Clark, 1929] (1, B.M.). 



Geographical distribution. Known from South Africa, from Saldanha Bay on the 

 west coast of Cape Province to Durban. 



Bathymetrical distribution. From the shore down to 26 meters. 



History. This species was originally described in 1915 as a 10-armed member of 

 the family Comasteridae in the genus Cominia. Its general appearance, in all the 

 specimens I have seen, is quite unlike that of any other member of the Antedonidae. 

 In 1938 Gislen confirmed its inclusion in the family Antedonidae after examining the 

 articular facets of the radials and centrodorsals of two specimens. He agreed also that 

 the genus Annametra is best placed hi the subfamily Antedoninae, its similarities to the 

 Heliometrinae being probably attributable to convergence. 



In 1952 it was recorded by A. M. Clark from several stations of the Cape Town 

 University Ecological Survey hi Table Bay and False Bay. 



Genus ARGYROMETRA A. H. Clark 



Iridometra (part) A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 131. 



Compsometra (part) A. H. CLARK, Crinoids of the Indian Ocean, 1912, p. 229. 



Argyrometra A. H. CLARK, Journ. Washington Acad. Sci., vol. 7, 1917, No. 5, p. 127 (referred to the 

 Antedoninae), p. 128 (diagnosis; type species Iridometra crispa A. H. Clark, 1908; range; included 

 species); No. 16, p. 505 (in key; range). GISLN, Nova Acta Reg. Soc. Sci. Upsaliensis, ser. 4, 

 vol. 5, No. 6, 1922, p. 130. 



Diagnosis. A genus of Antedoninae in which the cirri are LX-LXXX; P 3 is of 

 the same length and character as the succeeding pinnules, and PI and PS, which are 

 similar though of different lengths, have about 10 to 14 segments, most of which are 

 greatly elongated. 



Type species. Iridometra crispa A. H. Clark, 1908. 



Geographical range. From the Philippine Islands to northern New Zealand and 

 the Hawaiian Islands. 



Bathymetrical range. From 62 to 298 meters. 



