244 



ECHINODERMA TA. 



[EUC. BUG. 



or bowl-shaped from base to arms, 

 and with arms and interbrachial plates 

 subovate or subelliptical ; basals 4, 

 concealed in basal cavity and developed 

 in the interior; primary radials 3x5, 

 the first large ; secondary radials 2 x 10 ; 

 interradials 3, one very large ; arms 20, 

 composed of a double series of plates, 

 which fill the interbrachial spaces ; in- 

 terbrachial plates solid, extending from 

 the interradial plates as high as the 

 arms reach, and uniting at the summit ; 

 proboscis or tube extending to the top, 

 and sometimes far beyond ; column 

 round ; attaching by branching roots. 

 Type E. rosaceus. 



armosus, see Siphonocrinus armosus. 



cselatus, Hall, 1843, (Hypanthocrinites 

 cselatus,) Geo. Rep. 4th Dist. N. Y., p. 

 113, and 28th Rep. N. Y. St. Mus. Nat. 

 Hist., p. 142, Niagara Gr. 



chicagoensis, Winchell & Marcy, 1865, 

 Mem. Bos. Soc. Nat. Hist., p. 90, Ni- 

 agara Gr. 



conictts, Troost. Not denned. 



constrictus, Hall, 1879, Trans. Alb. Inst., 

 vol. 10 (Abstract, p. 10), and llth Rep. 

 Geol. and Nat. Hist. Ind., p. 273, Ni- 

 agara Gr. 



cornutus, Hall, 1864, 20th Rep. N. Y. 

 St. Mus. Nat. Hist., p. 363, Niag- 

 ara Gr. 



cornutus var. excavatus, Hall, 1864, 20th 

 Rep. N. Y. St. Mus. Nat. Hist., p. 364, 

 Niagara Gr. 



FIG. 302. Eucalyptocrinus crassus. 



crassus, Hall, 1863, Trans. Alb. Inst., vol. 

 4, p. 197, and 28th Rep. N. Y. St. Mus. 

 Nat. Hist., p. 141, Niagara Gr. 



decorus, Phillips, 1839, (Hypanthocri- 

 nites decorus,) Murch. Sil. Syst., p. 

 672, and Pal. N. Y., vol. 2, p. 207, Ni- 

 agara Gr. 



depressus, S. A. Miller, 1880, Jour. Gin. 

 Soc. Nat. Hist, vol. 3, p. 232, Ni- 

 agara Gr. 



egani, S. A. Miller, 1880, Jour. Gin. Soc. 

 Nat. Hist., vol. 3, p. 140, Niagara Gr. 



extenws, Troost. Not defined. 



gibbosus, Troost. Not defined. 



goldfttssi, Troost. Not defined. 



inconspectus, Ringueberg, 1884, Proc. Acad. 

 Nat. Sci., p. 148. Not properly defined. 



Isevis, Troost. Not defined. 



magnus, Worthen, 1875, Geo. Sur. 111., 

 vol. 6, p. 501, Niagara Gr. 



nashvillse, Troost. Not defined. 



obconicus, Hall, 1864, 20tu Rep. N. Y. 

 St. Mus. Nat. Hist., p. 365, Niag- 

 ara Gr. 



ornatus, Hall, 1861, Rep. of Progr. Geo. 

 Sur. of Wis., p. 20, Niagara Gr. 



ovalis, Troost, as figured by Hall, 1876, 

 28th Rep. N. Y. St. Mus. Nat. Hist., p. 

 143, Niagara Gr. 



papulosus, Hall, 1852, Pal. N. Y., vol. 2, 

 p. 211, Niagara Gr. 



phillipsi, Troost. Not defined. 



proboscidalis, S. A. Miller, 1882, Jour. 

 Gin. Soc. Nat. Hist., vol. 5, p. 224, Ni- 

 agara Gr. 



ramifer, Roemer, 1860, Sil. Fauna West 

 Tenn., p. 51, Niagara Gr. 



rotundus, S. A. Miller, 1882, Jour. Cin. 

 Soc. Nat. Hist., vol. 5, p. 82, Niag- 

 ara Gr. 



splendidus, Troost, Catal. Hall & Whit- 

 field, 1875, Ohio Pal., vol. 2, p. 128, Ni- 

 agara Gr. 



tennesseese, Troost. Not defined. 



tuberculatus, 

 Miller & Dyer, 

 1878, Jour. Cin. 

 Soc. Nat. Hist., 

 vol. 1, p. 36, Ni- 

 agara Gr. 



turbinatus, S. A. 

 Miller, 1882, 

 Jour. Cin. Soc. 

 Nat. Hist., vol. 5, 



F IT ri ?n n!?f TJ IT ' 

 Meek, l87l! US.' 

 Geo. Sur. Terr., p. 373. [Ety. eu, very ; 

 klados, branch ; Jcrinon, lily.] Calyx 

 like Platycrinus, and distinguished by 

 having the radial series extended in 

 the form of tubular free rays, which 

 bear arms, alternately, on either side, 

 throughout their length; arms com- 

 posed of a double series of interlock- 

 ing plates. Type E. montanensis. 



millebrachiatus, Wachsmuth & Springer, 

 1878, Proc. Acad. Nat. Sci. Phil., p. 245, 

 Burlington and Keokuk Gr. 



montanensis, Meek, 1871, Hayden's Rep. 

 U. 8. Geo. Sur. Ter., p. 373, Subcar- 

 boniferous. 



pleuroviminus, White, 1862, (Platycri- 

 nus pleuroviminus,) Proc. Bost. Soc. 

 Nat. Hist., vol. 9, p. 17, Up. Burling- 

 ton Gr. 



EUOASTER, Hall, 1868, 20th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 332. [Ety. euge, 

 pre-eminent, remarkable; aster, star.] 

 A central, alated disk, with five long, 

 slender flexuous rays; disk composed 

 on the ventral side of small polygonal 



