576 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



species). BATHER, Ann. Mag. Nat. Hist., ser. 9, vol. 1, No. 4, 1918, p. 298 (anal). OSBUBN, 

 Bull. Amer. Mus. Nat. Hist., vol. 41, 1919, p. 606 (host of Loxosomella) . MORTENSEN, Vid. 

 Medd. Nat. Foren. K0benhavn, vol. 72, 1920, p. 73 (host of Loxosomella antedonis; not the same 

 as the Loxosoma of Antedon pelasus); Studies in the development of crinoids, 1920, p. 22 

 (pentacrinoids compared with those of Tropiometra), p. 73 (anal and right posterior radial). 

 GRIEG, Sci. Res. Michael Sars Exped., 1910, vol. 3, pt. 2, 1921 (reprinted 1932), p. 43 (sta. 102; 

 notes), p. 47 (listed). MORTENSEN, Danmarks fauna, No. 27, 1924, p. 20. SCHORYGIN, Ber. 

 Wiss. Meeresinst. Moscow, vol. 1, pt. 8, 1925, p. 3 (listed), p. 6 (Barents Sea station 16b), p. 8 

 (station 98), p. 21 (stations; notes). KOEHLER, Les fehinodermes des mers d'Europe, vol. 2, 

 1927, p. 126 (description; range), pi. 11, figs. 3, 9, pi. 18, figs. 2, 3. GORBUNOW, Trans. Arctic 

 Inst., Leningrad, vol. 8, 1933, p. 78 (in Russian). THORSON, Medd. Gr0nland, vol. 100, No. 6, 

 1936, pp. 22, 24. LE DANOIS, Les profundeurs de la mer, Paris, 1948, pp. 148, 245. 



Hathromctra (Antedon) prolixa MORTENSEN, Danmarfc-Expedition til Gr0nlands NE kyst, vol. 5, 

 No. 4, Medd. Gr0nland, vol. 45, 1910, p. 239 (taken by the Dan mark) ; No. 8, 1911, p. 399. 



Hathrometra tenella (not of Retzius, 1783) VANET, Bull. Mus. Hist. Nat. Paris, vol. 20, No. 1, 1914, 

 p. 26 (Pourquoi-Pas? sta. 79). 



Hathrometra sarsii (not of Diiben and Koren, 1846) VON HOFSTEN, Kungl. Svenska Vet.-Akad. Handl., 

 vol. 54, 1915, p. 247 (of Marenzeller, 1878; Fischer, 1886; Pfeffer, 1894; Schmidt, 1904 = proZw:a). 



Poliometra prolLra A. H. CLARK, The Danish 7n<?o//-Exped., vol. 4, No. 5, Crinoidea, 1923, p. 8 (local- 

 ities), p. 42 (range). GISLEN, Ark. Zool., vol. 15, No. 23, 1923, pp. 15-23 (discussion; synonymy; 

 localities); Zool. Bidrag Uppsala, vol. 9, 1924, p. 28, p. 41 (measurements), pp. 82, 275; fig. 89, 

 p. 81; fig. 187, p. 98; fig. 302, p. 217. MORTENSEN, Danmarks Fauna, No. 27, 1924, p. 20. 

 KOEHLER, Les e'chinodermes des mers d'Europe, vol. 1, 1924, p. 60 (18-1960 meters). GRIEG, 

 Bergens Mus. Aarb. for 1923-24, No. 9, 1925, pp. 8, 11, p. 24 (Blaafjeld and Tovik stations). 

 MORTENSEN, Handbook of the echinoderms of the British Isles, 1927, p. 32 (diagnosis; habits; 

 parasites; range); fig. 18, p. 32; fig. 19, 1, 2, p. 33 (pentacrinoids). SCHORYGIN, Ber. Wiss. 

 Meeresinst. Moscow, vol. 3, pt. 4, 1928, p. 24 (distribution in the Barents Sea; temperature, 

 bottom and salinity conditions), p. 123 (absent in southern Barents Sea), table facing p. 128 

 (bathymetric and thermal ranges and salinity range). MORTENSEN, Medd. Gr0nland, vol. 79, 

 No. 2, 1932, p. 6 (station 73; notes), p. 50 (range), p. 57 (cold area). TORTONESE, Natura, 

 Milano, vol. 24, 1933, p. 163 (bathymetrical range). EKMAN, Tiergeographie des Meeres, 1935, 

 pp. 251, 378. GRIEG, Medd. Norges Svalb. Ishavs-Undersoek., Oslo, No. 26, 1935, p. 9 (recorded 

 from Franz Josef Land by Marenzeller, Michailovskij and Gorbunow). HEDING, Medd. Gr0n- 

 land, vol. 104, No. 15, 1935, pp. 3, 5, p. 6 (E. Greenland), p. 9 (localities; notes on pentacri- 

 noids). A. H. CLARK, Journ. Washington Aead. Sci., vol. 26, No. 7, 1936, p. 296 (Bartlett stas. 

 40, 41); Sci. Rep. Australasian Antarctic Exped. 1911-14, ser. C, vol. 8, pt. 4, 1937, p. 6 (distri- 

 bution); Explorations des mers de 1'U.R.S.S., vol. 23, 1937, p. 222 (association with Heliometra 

 glacialis) (in Russian), p. 229; Proc. U.S. Nat. Mus., vol. 89, 1940, p. 425 (listed), p. 432 (station 

 21); Mem. Soc. Cubana Hist. Nat., vol. 14, No. 2, 1940, p. 140. DJAKONOV, Journ. General 

 Biol., Moscow, vol. 6, 1945, p. 132 (wide depth range). EINARSSON, The zoology of Iceland, 

 vol. 4, pt. 70, 1948, p. 5 (Icelandic localities), p. 46 (member of Arctic deep basin fauna), p. 47 

 (map of distribution about Iceland), pp. 58, 61 (distribution). TORTONESE, Bull. Inst. Oc^anogr. 

 Monaco, No. 956, 1949, p. 4 (depth range). HYMAN, The invertebrates, vol. 4, Eehinodermata, 

 1955, p. 113 (common between Denmark and Iceland). TORTONESE, Ann. Mus. Civ. Stor. 

 Nat. Genova, vol. 68, 1956, p. 182 (locality). BLACKER, Fish. Invest. (Min. Agric.), London, 

 series 2, vol. 20, No. 10, 1957, pp. 16-18 (geographical, temperature and depth ranges in the 

 Bear Island-Spitzbergen area); fig. 7, p. 10, p. 33. 



Poliometra prolixa var. groenlandica GISLEN, Ark. Zool., vol. 15, No. 23, 1923, p. 16 (Greenland and 

 the Faroe Channel; Spitzbergen specimens not typical). 



Poliometra prolixa var. siberica GISLEN, Ark. Zool., vol. 15, No. 23, 1923, p. 16 (Nova Zembla, Kara 

 Sea and Taimyr). 



Polimetra prolixa GISLEN, Zool. Bidrag Uppsala, vol. 9, 1924, p. 11 (forked pinnule). 



Peliometra prolixa DJAKONOV, Trav. Soc. Nat. Leningrad, vol. 56, pt. 2, 1926, p. 107 (in key). 

 GORBUNOW, Trans. Artie Institute, Leningrad, vol. 2, 1932 (in Russian), p. 95, p. 99 (Barents 

 Sea station 24, Queen Victoria Sea station 20), pp. 100, 119, 123, 124, 132, 136 (station 20), 

 p. 137 (station 24); vol. 7, 1933, p. 42 (Blagopolutschja Bay, station 12; Witnej Bay, station 11; 

 115 and 20 meters, mud), p. 53 (Zarnitza stations 11, 12, data); vol. 8, 1933, p. 5 (Marenzeller's 



