. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. —] ECHINODERMA TA. 247. Calyx having strong radial ridges and depressed interradial and intersecond- ary radial areas; basals 5; subradials 5; primary radials 3x5, or the left posterior ray only 2; secondary radials 10 to 16 X 10; interradial plates numer- ous and small; azygous area supported by a ridge up the middle series of plates; vault covered by small plates, which are continued as a covering over
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. —] ECHINODERMA TA. 247. Calyx having strong radial ridges and depressed interradial and intersecond- ary radial areas; basals 5; subradials 5; primary radials 3x5, or the left posterior ray only 2; secondary radials 10 to 16 X 10; interradial plates numer- ous and small; azygous area supported by a ridge up the middle series of plates; vault covered by small plates, which are continued as a covering over the arm furrows; arms 20 or more, bearing pinnules. Type G. nealli. angularis. Miller & Dyer, 1878, (Glypto- crinus angularis,) Jour. Cin. Soc. Nat. Hist., vol. 1, p. 28, Hud. Riv. Gr. cognatus,S. A. Miller, 1881, (Glyptocrinus cognatus,) Jour. , vol. 4, p. 75, Hud. Riv. Gr. m agnificus, S. A. Miller, 1883, Jour. Cin. Soc. Nat. Hist., vol. 6, p. 230, Hud. Riv. Gr. nealli. Hall, 1866, (G ly }) t o c rinus nealli,) Adv. Sheets 24th Rep. N. Y. St. Mufl. Nat. Hist., p. 206, j and Ohio Pal., vol. I 1, p. 34, Hud. Riv. Gr. splendens, S. A. Miller, 1883, Jour. Cin. Soc. Nat. Hist., vol. 6, p. 230, Trenton Gr. Gbnn^ocrinus, Wachsmuth & Springer, 1882, Proc. Acad. Nat. Sci., p. 334. [Ety. gennaios, of noble birth ; krinon, lily.] Body wider than high, lobed, striated; vault low; basalsS; primary radials 3x5; secondary radials lxlO;inter- radials 5 to 7; azygous interradials more numerous, and having three pliltes in the second row instead of two, as in Actinocrinus; interaxillaries 1 to 3. Type G. cornigerus. calypso, Hall, 1862, (Actinocrinus calypso,) 15th Rep. N. Y. St. Mus. Nat. Hist., p. 133, Ham. Gr. cassedayi, Lyon, 1861, (Actinocrinus cas- sedayi,) Proc. Acad. Nat. Sci. Phil., p. 410, Up. Held. Gr. cauliculus. Hall, 1862, (Actinocrinus cauliculus,) 15th Rep. N. Y. St. Mus. Nat. Hist., p. 132, Ham. Gr. cornigerus, Lyon & Casseday, 1859, (Actinoc
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