776 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



broad as long, and the terminal are slightly longer than broad. P» and Pj are similar, 

 but only 12 mm. long. The following pinnules are somewhat stouter, with the first 

 two segments verj^ short, the thu-d about as long as broad, and the following becoming 

 progressively elongated, with the distal edges slightly everted and very finely spinous. 

 The succeeding pinnules gradually acquu-e longer segments; the pinnules in the distal 

 part of the proximal third of the arm have the third and fourth segments twice as long 

 as broad and the following about 3 times as long as broad, becoming even longer dis- 

 tally. The distal pinnules arc about 15 mm. long, with about 20 to 25 segments, of 

 which the first 2 are very short, the thu'd is about two and a half times as long as broad, 

 and those succeeding become gradually more elongated. The distal pinnules are slender, 

 and their component segments have everted and finely spinous distal ends. 



Locality. — Albatross station 4918; Eastern Sea, about 90 miles west-southwest of 

 Kagoshima Gulf; Gwaja Shuna bearmg S. 38° E., 34 miles distant (lat. 30°22'00" N., 

 long. 129°08'39" E.); 660 meters; gray sand, globigerinae, and broken shells; August 

 13, 1906 [A. H. Clark, 1907] (1, U.S.N.M., 22652). 



Remarks. — After describing this species in 1907 I came to the conclusion that it 

 was in reahty the same as Carpenter's naresi, and in 1912 relegated it to the synonymy 

 of that species. In 1910 I examined the type of T. naresi in the British Museum and 

 found, as stated in 1913, that T. borealis is easily distinguished from T. naresi by the 

 small size of the first and the large size of the second brachials, the latter being nearly 

 or quite twice as large as the former, whereas in T. naresi the fu-st 3 brachials are all 

 of about the same size. [Note by A.M. C: But see my remarks about T. naresi.] T. 

 borealis is also more rugged than T. naresi. 



THAUMATOCRINUS RENOVATUS P. H. Carpenter 



Figure 49 

 [See also vol. 1, pt. 1, figs. 115-118 (p. 183), 302 (p. 264), pi. 6, fig. 552; pt. 2, pi. 23, fig. 1141] 



Promachocrinus abyssorum P. H. Carpenter, Proc. Roy. Soc, vol. 28, 1879, p. 385 (nomen n^idum), 

 Nature, vol. 19, 1879, p. 450 {nomen nudum) ; PhU. Trans. Roy. Soc. for 1883, pt. 3, 1884, p. 919, 

 footnote; Challenger Reports, Narrative, vol. 1, pt. 1, 1885, p. 311; Qu.art. Journ. Micr. Sci., 

 new ser., vol. 27, 1887, p. 386; Challenger Reports, Zoology, vol. 26, pt. 60, 1888, p. 351 (descrip- 

 tion; Challenger stas. 147, 158), pi. 1, figs. 4, 5, pi. 69, figs. 5-7. — Walther, Einleitung in die 

 Geologie als historische Wiss., 1894, p. 300. — Shipley, Antarctic manual, 1901, Ch. 18, p. 269. — 

 Hamann, Bronn's IClassen tind Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1576. — A. H. 

 Clark, Crinoids of the Indian Ocean, 1912, p. 33 (identity); Die Crinolden der Antarktis, 1915, 

 p. 120 (belongs to the Pentametrocrinidae; = Thaumaiocrinus renovatus). — Bather, Ann. Mag. 

 Nat. Hist., ser. 9, vol. 1, No. 4, 1918, p. 300. 



Thaumaiocrinus renovatus P. H. Carpenter, Proc. Roy. Soc, vol. 35, 1883, p. 138 (preliminary notice; 

 Challenger sta. 158); Phil. Trans. Roy. Soc. for 1883, pt. 3, 1884, p. 919 (detailed description and 

 comparisons; Challenger sta. 158), pi. 71 ; Challenger Reports, Zoology, vol. 11, pt. 32, 1884, p. 372 

 (description; Challenger sta. 158), pi. 56, figs. 1-5; Narrative, vol. 1, pt. 1, 1885, p. 312, figs. 124, 

 A, B, p. 312 (from preceding). — Perrier, Explorations sous-marins, 1886, p. 276. — P. H. Car- 

 penter, Challenger Reports, Zoology, vol. 26, pt. 60, 1888, p. 66 (description; Challenger sta. 158); 

 figs. 1, A, B, p. 67. — Walther, Einleitung in die Geologie als historische Wiss., 1894, p. 299 (from 

 Carpenter). — Lang, A text book of comparative anatomy, vol. 2, 1896, p. 310, fig. 256. — Bather, 

 in Lankester, A treatise on zoology, vol. 3, Echinoderma, 1900, p. 196, fig. cxix. — Shipley, 

 Antarctic Manual, 1901, Ch. 18, p. 269. — Delage and Herouard, Traitd de zoologie concrete, vol. 

 3, 1903, p. 394, fig. 496. — Hamann, Bronn's Klassen und Ordnungen des Tier-Reichs, vol. 2, 

 Abt. 3, 1907, p. 1575 Gisted).— A. II. Clark, Proc. U.S. Nat. Mus., vol. 36, 1909, p. 362 (compared 

 with young Cornalilia), p. 363 (arm and pinnule structure identical with that of Pentametrocrinus 

 and Decametrocrinus) ; Journ. Washington Acad. Sci., vol. 2, No. 13, 1912, pp. 311-314 (inter- 



