766 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



In 1907 I called Dr. W. H. Ball's attention to this gastropod, giving him the name of 

 the crinoid as Baihymetra, sp., and in the following year he bestowed the name Stilifer 

 (Mucronalia) bathymetrae upon it. 



THAUMATOMETRA, ep. B 



Locality. Albatross station 4761; near the Shurnagin Islands, Alaska; Point 

 Farewell, Shumagin Islands, bearing N., 49 miles distant (lat. 5357'30" N., long. 

 15931'00" W.); 3607 meters; temperature 1.67 C.; blue clay; May 23, 1906 (1, 

 U.S.N.M., 36222). 



Remarks. The specimen consists of the partially decalcified and unidentifiable 

 centrodorsal and arm bases of a species apparently belonging to the genus Thaumato- 

 metra. 



Family PENTAMETROCRINIDAE 



Thaumatocrinida HAECKEL, Systematisclie Phylogenie der wirbellosen Thiere (Invertebrata), Theil 



2, 1896, pp. 469, 473 (includes only Thaumatocrinus) . 



Thaumatoerinidae BATHER, Rep. British Assoc. for 1898, 1899, p. 923; in Lankester, A treatise on 

 zoology, pt. 3, Echinoderma, 1900, p. 196 (diagnosis; includes only Thaumatocrinus). A. H. 

 CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 344 (includes Thaumatocrinus; part of 

 Comatulidae as understood by P. H. Carpenter) ; Proo. U.S. Nat. Mus., vol. 34, 1908, p. 210 

 (in key; includes only Thaumatocrinus; range), p. 211. 



Decametrocrinidae MINCKERT, Zool. Anz., vol. 28, No. 13, 1905, p. 494 (includes Decametrocrinus and 

 Promachocrinus) . A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 344 (abandoned 

 in favor of Eudiocrinidae) ; Proc. Biol. Soc. Washington, vol. 21, 1908, p. 135 (must be rejected 

 as it includes Promachocrinus a genus of Antedonidae near Heliometra and the "utterly different 

 Decametrocrinus"); Die Crinolden der Antarktis, 1915, p. 120 (history and status). 

 Eudiocrinidae A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 344 (includes Eudiocrinus 

 and Decamelrocrinus) ; Proc. Biol. Soc. Washington, vol. 21, 1908, p. 135 (abandoned for Penta- 

 metrocrinidae since Eudiocrinus restricted belongs to the Zygometridae) ; Proc. U.S. Nat. Mus., 

 vol. 34, 1908, p. 210 (in key; range), p. 211, p. 212 (in table of range) . 



Pentametrocrinidae A. H. CLAHK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 124, p. 135 (includes 

 Pentamctrocrinus, Decamelrocrinus and probably Thaumatocrinus), p. 136 (listed), p. 149; Proc. 

 U.S. Nat. Mus., vol. 34, 1908, p. 269 (similarity of Thaumatocrinus to Pentametrocrinus and 

 Decametrocrinus), p. 277 (diagnosis; range; included genera Pentametrocrinus and Decametro- 

 crinus) ; vol. 35, p. 117 (sequence of articulations) ; Ainer. Nat., vol. 42, No. 503, 1908, pp. 724, 725; 

 Geogr. Journ., vol. 32, No. 6, 1908, p. 606; Proc. Biol. Soc. Washington, vol. 22, 1909, p. 175 

 (included in Macrophreata) ; Amer. Nat., vol. 43, 1909, p. 581; Vid. Medd. Nat. Foren. K0ben- 

 havn, 1909, pp. 124, 148; Proc. U.S. Nat. Mus., vol. 36, 1909, pp. 363, 364 (relationship of 

 Thaumatocrinus to Pentametrocrinus and Decametrocrinus); vol. 38, 1910, p. 331; vol. 40, 1911, 

 pp. 6, 9, 649; Crinoids of the Indian Ocean, 1912, p. 6 (in table of E. Indian fauna), pp. 11, 12, 

 15 (distribution), p. 27 (geographical and bathymetrical ranges), p. 44 (in key), p. 47 (in key), 

 p. 63 (key to the genera), p. 247; Notes Leyden Mus., vol. 34, 1912, p. 151; Fisheries, Ireland, 

 Sci. Invest., 1913, pt. 4, p. 4; Journ. Washington Acad. Sci., vol. 4, No. 19, 1914, p. 559 (listed), 

 p. 560 (range), pp. 562, 563; Amer. Nat., vol. 49, 1915, p. 525 (listed), p. 526 (asymmetrical genus 

 Thaumatocrinus); Die Crinoiden der Antarktis, 1915, pp. 120, 121, p. 148 (references; diagnosis; 

 range); Unstalked crinoids of the Siboga-Exped., 1918, p. 259 (key to the included genera), 

 pp. 265, 266 (comparison with Alopocrinus) ; Univ. Iowa Studies in Nat. Hist., vol. 9, No. 5, 

 1921, p. 12; The Danish Ingolf-Exped., vol. 4, No. 5, Crinoidea, 1923, pp. 13, 43, 47 (in key). 

 GISLEN, Zool. Bidrag. Uppsala, vol. 9, 1924, pp. 35, 37, 83, 85, 91 (articulations), p. 213 (short 

 intersyEvgial interval), p. 232; Vid. Medd. Nat. Foren. K0benhavn, vol. 83, 1927, p. 52. 

 MORTENSEN, Handbook of the echinoderms of the British Isles, 1927, p. 16 (in key), p. 23 

 (diagnosis; occurrence in northwest Atlantic). GISLEN, Arch. Zool., vol. 19, No. 32, 1928, p. 12. 

 A. H. CLARK, John Murray Exped. 1933-34, Sci. Reports, vol. 4, No. 4, 1937, p. 97, p. 102 

 (listed), p. 103 (occurs in western Indian Ocean). FELL, Tuatara, Wellington, New Zealand, 



