PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 449 



ANTHOMETRA ADRIANI (Bell)* 



[See vol. 1, pt. 2, fig. 938, p. 549] 



Antedon adriani BELL, National Antarctic Exped., Nat. Hist., vol. 4, Echinod., 1908, p. 4 (descrip- 

 tion; Discovery, Winter Quarters, down to 130 fms., and off Mts. Erebus and Terror, 500 fms.), 

 pi. 2. VON STUMMER-TRAUNFELS, National Antarctic Exped., Nat. Hist, vol. 4, Myzostomidae, 

 1908, pp. 2, 7 (myzostomes) . A. H. CLARK, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 17, 

 footnote (not identifiable from the description; remarks); Smithsonian Misc. Coll., vol. 61, No. 15, 

 1913, p. 80 (of Bell, 1908= Anthometra adriani -{ Solanometra antarctica [Promachocrinus ker- 

 guelensis]). BOULENGER, British Antarctic (Terra Nova) Exped. 1910, Nat. Hist. Rep., Zool., 

 vol. 2, No. 6, Jan. 22, 1916, pp. 135, 136 (myzostomes). BELL, British Antarctic (Terra Nova) 

 Exped. 1910, Nat. Hist. Rep., Zool., vol. 4, No. 1, 1917, p. 2 (Terra Nova stas. 194, 314, 348). 



Anlhometra adriani A. H. CLARK, Smithsonian Misc. Coll., vol. 61, No. 15, 1913, p. 60 (published 

 reference to specimens in the B. M.; Discovery, Winter Quarters, 124 and 130 fms.; same, No. 10 

 Hole, and No. 10 Hole, 127 fms.; Mts. Erebus and Terror; characters). F. W. CLARKE and 

 WHEELER, U.S. Geol. Surv. Prof. Paper 90-D, 1914, pp. 34 and following (inorganic constituents of 

 the skeleton). A. H. CLARK, Journ. Washington Acad. Sci.,vol. 5, 1915, No. 3, p. 81 (Antarctic; 

 range) ; Die Crinoiden der Antarktis, 1915, p. 107 (in key to Antarctic crinoids), p. 122 (characters), 

 p. 168 (a shallow water antarctic species; circumpolar; range), p. 169 (relationships), p. 192 

 (further discussion), p. 207 (complete analysis of the skeleton by F. W. Clarke). F. W. CLARKE 

 and WHEELER, U.S. Geol. Surv. Prof. Paper 102, 1917, pp. 21 and following (analysis of the 

 skeleton). MORTENSEN, Wiss. Ergeb. schwed. Sudpolar-Exped., 1901-1903, vol. 4, Lief. 8, 1918, 

 p. 18 (Antarctic sta. 8). F. W. CLARKE and WHEELER, U. S. Geol. Surv. Prof. Paper 124, 1922, 

 p. 17 (inorganic constituents of the skeleton). GISLEN, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 

 194, 288; fig. 342, p. 281. MORTENSEN, Ark. Zool., vol. 17, No. 31, 1925, p. 2 (Ross Sea; 550 

 meters). GISLEN, Ark. Zool., vol. 19, No. 32, 1928, p. 11 (proximal pinnules with some expanded 

 segments so that the species is transitory to the Isometrinae) . A. H. CLARK, Journ. Linn. Soc. 

 (Zool.), vol. 36, 1929, p. 662 (Terra Nova station). GRIEG, Bergens Mus. Aarb., 1929, No. 3, 

 p. 4 (specimens collected from harpoon line). A. H. CLARK, Sci. Rep. Australasian Antarctic 

 Exped., 1911-1914, ser.C, vol.8, pt. 4, 1937, pp. 14-16 (Aurora stations 1,2,3,8,9,12; distribution; 

 color in life; description). JOHN, Res. Voy. Belgica, 1897-1899, Crinoidea, 1937, p. 10 (proc- 

 esses on the lower brachials cleft); Proc. Linn. Soc. London, sess. 149, pt. 2, 1937, p. 85; Discovery 

 Reports, vol. 18, 1938, p. 123 (listed), p. 124 (taken with Myzostomum), p. 129 (in distribution table), 

 p. 131(in key), p. 151 (stations; notes), p. 152 (Myzostomum on disk); fig. 5, p. 151, pi. 3, fig. 4; 

 Rep. B.A.N.Z. Antarctic Res. Exped. 1929-1931, ser. B., vol. 4, pt. 6, 1939, p. 191 (listed), pp. 

 197-198 (stations; range of size). VANEY and JOHN, Sci. Res. Voy. Scotia, 1939, p. 668 (Scotia 

 station). VINOORADOV, Mem. Sears Found. Mar. Res., vol. 2, 1953, p. 256 (skeletal com- 

 position). HYMAN, The invertebrates, vol. 4, Echinodermata, 1955, p. 113. TORTONESE, 

 Ann. Mus. Civ. Stor. Nat. Genova, vol. 68, 1956, p. 182. 



Promachocrinus (Anthometra) adriani A. H. CLARK, Die Crinoiden der Antarktis, 1915, p. 104 (in 

 Gauss collection), p. 106 (recorded as Antedon adriani from the Discovery collection), p. 135 (syn- 

 onymy; detailed description of Gauss specimens; Gauss station, 350-400 meters; resume 1 of pre- 

 vious records), pi. 6, figs 1-5, pi. 7, figs. 1-5. 



Promachocrinus adriani EKMAN, Tiergeographie des Meeres, 1935, p. 319. 



Diagnostic features. The cirri number up to XC with a maximum length of 

 100 mm. and at the most 93 segments; the arms are up to 250 mm. long but usually 

 about 150 mm., with a prominent dorsal keel which may be serrated or notched or in 

 the form of a series of tubercles; PI is also carinate; it is up to 22 mm. long, with 59 

 segments; P 2 is much shorter, about 12 mm. long, with only about 18 to 20 segments. 



Description. The centrodorsal is usually more or less sharply conical, more rarely 

 almost hemispherical, with a relatively large bare polar area. The cirrus sockets, which 



*See also Addenda (p. 837) under 1963. 



