414 BULLETIN 82, tTNITED STATES NATIONAL MUSEUM VOLUME 1 



definite structural similarities, such as a pronounced spinosity in the case of the young, 

 and the occurrence among masses of large individuals of much smaller examples lighter 

 in color with persistent juvenile features, are especially worthy of investigation. 



Two myzostomes (see part 2, p. 685) have been described from it, Loxosomella 

 and Truncatulina have been found attached to it, and fragments of an encysted crus- 

 tacean have been found on sections through the disk. What this last is has never been 

 determined, and we know nothing of any other parasites. 



HEUOMETRA GLACIALIS MAXIMA (A. H. CLARK)* 



(See vol. 1, pt. 1, fig. 392 (p. 307); pt. 2, fig 164 (p. 86), pi. 54, fig. 1348] 



Anledon eschrichlii (not of Muller, 1841) von Marenzeller, Denkschr. Akad. Wiss. Wien, math.- 

 nat., vol. 72 for 1902, 1903, p. 564 (lat. 42°08' N., long. 130°39' E.; 300 meters; with Myzostoma 

 gigas).—k. H. Clark, Proc. U.S. Nat. Mus., vol. 33, 1907, p. 75 (Okhotsk Sea; La Perouse Strait; 

 southern Sakhalin; parts of the Gulf of Tartary; northern part of the Sea of Japan). — Sowerbt, 

 The Naturalist in Manchuria, Tientsin, 1930, vol. 5, p. 79 (repeats distribution from A.H.C.). — 

 Pycraft, The Illustrated London News, vol. 190, No. 5263, March 2, 1940, p. 266 (abundance In 

 North Pacific; from A.II.C). 



ArUedon sp., Schmidt, Pisces marium orientalium imperii rossici, 1904, pp. 42, 43, 44, 46 (various 

 localities in Peter the Great Bay; 75-125 sagens). 



Antedon eschrichlii var. maxima A. H. Clark, Proc. U.S. Nat. Mus., vol. 33, 1907, p. 69 (about 3 feet 

 in diameter; obtained in enormous numbers), p. 75 (locality). 



Antedon hrachymera A. H. Clark, Proc. U.S. Nat. Mus., vol. 33, 1907, p. 76 {Albatross station 4986).— 

 SowERBY, The Naturalist in Manchuria, Tientsin, 1930, vol. 5, p. 79. 



Heliometra maxima A. 11 Clark, Smithsonian Misc. Coll., vol. 50, 1907, pt. 3, p. 351 (listed); Amer. 

 Nat., vol. 42, 1908, No. 500, p. 542 (corresponds to the Atlantic H. glacialis; with the latter and 

 H. hrachymera and H. quadrata forms a definite subdivision of the Polar Pacific fauna) ; No. 503, 

 p. 719 (range; variation in size); Proc. U.S. Nat. Mus., vol. 34, 1908, p. 267, fig. 5 (off southern 

 Sakhalin; 12-armed specimen) ; vol. 35, 1908, p. 126 (12-armed specimen illustrates the origin of 

 Promachocrinus); vol. 39, 1911, p. 487 (chemical composition of the skeleton); Mem. Australian 

 Mus., vol. 4, 1911, p. 709 (chemical composition of the skeleton); Proc. Biol. Soc. Washington, 

 vol. 26, 1913, p. 179 (range in eastern Asia); Journ. Washington Acad. Sci., vol. 5, 1915, No. 3, 

 p. 80 (Arctic fauna in the western part of the Okhotsk and Japan seas; derived from the fauna of 

 the Bay of Bengal); Die Crinolden der Antarktis, 1915, p. 125 (analogy with Anthometra adriani), 

 p. 126 (specimen with a doubled radial, representing a 6-rayed Promachocrinus kerguelensis; list 

 of localities; geographical, bathymetrical and thermal ranges); Univ. Iowa Studies in Nat. Hist., 

 vol. 9, No. 5, 1921, p. 21 (in reduction to mere essentials, and in size, resembles Rafflesia arnoldi). 

 Heliometra hrachymera A. II. Clark, Smithsonian Misc. Coll., vol. 50, 1907, pt. 3, p. 351 (listed); 

 Amer. Nat., vol. 42, No. 500, 1908, p. 542 (represents in the Okhotsk and Japan Seas //. quadrata; 

 these, with //. maxima and H. glacialis, form a distinct arctic section of the Polar- Pacific fauna). — 

 H. L. Clark, Mem. Australian Mus., vol. 4, 1900, p. 525 (association with H. eschrichlii maxima 

 in the Japan Sea). — A. H. Clarx, Die Crinolden der Antarktis, 1915, p. 125 (exhibits the character- 

 istic features of Solanometra anlaretica), p. 127 {Alhatross Sta. 4986). 



Heliometra glacialis var. maxima A. H. Clark, Geogr. Journ., vol. 32, No. 6, 1908, pp. 604, 605 (dis- 

 tribution; variation in size; ecology); Vid. Medd. Nat. Forcn. K0benhavn, 1909, p. 188 (lo- 

 calities); Proc. U.S. Nat. Mus., vol. 39, 1911, p. 488 {Albatross station 4986; chemical composi- 

 tion of the skeleton). — F. W. Clarke and Wheeler, U.S. Geol. Surv. Prof. Paper 90-D, 1914, 

 p. 35 (inorganic constituents of the skeleton). — A. H. Clark, Journ. Washington Acad. Sci., vol. 

 5, 1915, No. 6, p. 213 (very closely related to H. glacialis), p. 215 (Japanese Arctic species; bathy- 

 metrical and thermal ranges and their significance). — F. W. Clarke in A. H. Clark, Die Crinolden 

 der Antarktis, 1915, p. 207 (relative proportion of magnesium and calcium carbonates in the skele- 

 ton). — F. W. Clarke and Wheeler, U.S. Geol. Surv. Prof. Paper 102, 1917, p. 22 (inorganic con- 



*See also Addenda (p. 836) under 19.59, 1962. 



