4 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



pp viii 108 (care of brood).— Ekm an, Tiergeographie des Meeres, 1935, p. 307.— Mobtensen, 

 Kongl baiisko Vid. Selsk. Skr., nat. math., ser. 9, vol. 7, No. 1, 1937, pp. 63, 64 (larvae in rela- 

 tion to those of Lamprometra).—JoBU, Proc. Linn. See. London, sess. 149, pt. 2, 1937, p. 86 

 (two Antarctic species; discussion), p. 88 (sexual characters and brood protection) .—A .11. Clark, 

 Sci. Rep. Australasian Antarctic Exped. 1911-14, ser. C, vol. 8, pt. 4, 1937, p. 6.— H. L. Clark, 

 Mem Mus. Comp. Zool., vol. 55, 1938, p. 42.— John, Discovery Reports, vol. 18, 1938, pp. 

 131, 193; Rep. B.A.N.Z.A.R.E. 1929-31, ser. B, vol. 4, pt. 6, 1939, pp. 207, 211.— 

 CufcNOT, in Grassd, Traitd de zoologie, vol. 11, 1948, p. 55.— Dawydoff, in Grass6, Traitd 

 de zoologie, vol. 11, 1948, p. 315 (larva); p. 316.— Hyman, The invertebrates, vol. 4, Echino- 

 dcrmata, 1955, p. 75 (brood chambers), p. 87 (doliolaria larva lacks ciliated bands), p. 95 (includes 

 two species), p. 113. 



J^ote.— The characters and range of this genus are given under the family Noto- 

 criuidac of which it is the only known representative. 



KEY TO THE SPECIES OF NDTOCRINUS 



a'. Centrodorsal bare between the intcrradial columns of cirrus sockets; cirri long, with up to 90 

 segments (ofif the Antarctic continent; 80-640 meters) virilis (p. 4) 



a'. Centrodorsal with additional cirrus sockets placed in the radial areas between the intcrradial 

 columns; cirri moderate in length, with up to only about 40 segments (off the Antarctic con- 

 tinent; 130-603 meters) ..mortenseni (p. 14) 



NOTOCBINUS VIRIUS Mortensen* 



Figure 1,o 

 ISee vol. I, pt. 2, pi. 49, figs. 1329 and 1330, pi. 55, figs. 1349-1352] 



Notocrinus virilis Mortensen, Vid. Medd. Nat. Foren. K0benhavn, vol. 68, 1917, p. 206 (description; 

 discussion; Swedish Antarctic station 5); figs. 1, 2, p. 206; Wiss. Ergeb. schwed. Siidpolar-Exped. 

 1901-1903, vol. 6, Lief. 8, 1918, p. 2 (detailed description), pi. 1, figs. 1-5, pi. 2, figs. 1-4, pis. 3, 

 4; text fig. 1-5, pp. 3-5; Studies in the development of crinoids, 1920, pp. 49-53, pis. 24-26; text 

 fig. 7, p. 53 (younger stages). — A. H. Clark, Smithsonian Misc. Coll., vol. 72, No. 7, 1921, pp. 

 37, 38 (IMyzostomum); The Danish /nffo/Z-Exped., vol. 4, No. 5, Crinoidea, 1923, p. 43 (local- 

 ity).— Gisl^n, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 44, 51, 53, 80, 195, 214; fig. 82, p. 81; 

 fig. Ill, p. 93; figs. 180-183, p. 98; figs. 191-199, p. 129; fig. 260, p. 199.— Koehler, Les echi- 

 nodermes des mers d'Europe, vol. 1, 1924, p. 35 (brooding of young). — -A. H. Clark, Journ. 

 Linn. Soc. (Zool.), vol. 36, 1929, p. 664 (Terra Nova Sta. 341; notes). — Grieq, Bergens Mus 

 Aarbog, 1929, No. 3, p. 5 (South Shetland; notes). — Tortonesb, Natura, Milano, vol. 24, 1933, 

 p. 165. — A. H. Clark, Sci. Rep. Australasian Antarctic Exped. 1911-14, ser. C, vol. 8, pt. 4, 

 1937, pp. 6, 7 (in key), p. 16 (Stas. 1, 3; notes). — John, Proc. Linn. Soc. London, sess. 149, pt. 2, 

 1937, p. 86 (Antarctic), p. 88 (brood protection); Discovery Reports, vol. 18, 1938, p. 124 (host of 

 Myzostome), p. 125 (viviparity described by Mortensen, 1918, 1920), p. 126 (in distribution 

 table), p. 127 (position of gonads), p. 129 (distribution), p. 132 (in key), p. 193 (stations; descrip- 

 tion of material), p. 194 (distribution), pp. 210-219 (pentacrinoid larvae), figs. 19 (cirri), 23, 

 24 (pentacrinoid larvae); Rep. B.A.N.Z.A.R.E. 1929-31, ser. B, vol. 4, pt. 6, 1939, p. 192 

 (constant differences between B..\.N.Z..\.R.E. and Discovery material from different sectors), 

 pp. 207-209 (stations; supplementary description of new material), fig. 6. — Dawydoff, in 

 Grass6, Trait6 de zoologie, vol 11, 1948, p. 321. 



Notocrinus virile IIyman, The invertebrates, vol. 4, Echinodermata, 1955, fig. 28D (pinnule with 

 testes) . 



Diagnostic Jeatures. — The truncated conical centrodorsal is usually higher than 

 wide, with the two columns of cirrus sockets in each radial area separated by a tri- 



♦See also Addenda (p. 836) under 1963. 



