232 



ECHINODERMA TA. 



[CIX>. COD. 



magnificus, Billings, 1859, Can. Org. Rem., 



Decade 4, p. 54, Trenton Gr. 

 regius, Billings, 1857, Rep. of Prog. Geo. 



Sur. Can., p. 277, and Can. Org. Rem., 



Decade 4, p. 53, Trenton Gr. 



FIG. 284. Cleiocrinus regius. Diagram. 



CLOSTEROCRINUS, Hall, 1852, Pal. N. Y., vol. 

 2, p. 79. [Ety. kloster, a spindle ; krinon, 

 lily.] Body obconic; basals 3; sub- 

 radials 1x5; number of radials un- 

 known ; azygous interradials present ; 

 arms composed of a single series of 

 plates; column round. Type C. elon- 

 gatus. 



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

 p. 179, Clinton Gr. 



COCCOCRINUS, Muller, 1855, Verhand, Natur- 

 hist. Vereins Rhein und Westph., Jahr. 

 12, p. 20. [Ety. kokkos, a berry ; krinon, 

 lily.] Basals 3; radials 2x5; inter- 

 radials 1; column round; distinguished 

 from Haplocrinus by the characters of 

 the first radials and the oral plates, and 

 from Platycrinus by the character of 

 the vault which is composed of five 

 oral plates resting upon the five inter- 

 radials, and by the character of the 

 column. Type C. rosaceus. 



FIG. 265. Coccocrinus bacca. 



bacca, Roemer, 1860, Sil. Fauna West 



Tenn., p. 57, Niagara Gr. 

 CODASTER, McCoy, 1849, Ann. & Mag. Nat. 

 Hist.,2d ser., vol. 3, p. 250. [Ety. korton, 

 a bell ; aster, star.] Calyx inverted 

 conical ; summit broad ; basals 3, one 



tetragonal and two pentagonal, each 

 having its inner apex notched to form 

 part of the round columnar canal ; 

 radials 1x5, large, equal, reaching to 

 the truncated summit, to which, from 

 their mesial gibbosity, they 

 give a pentagonal outline; 

 deltoid plates on the sum- 

 mit; mouth central, and 

 from it five prominent 

 ambulacra diverge, one to 

 each angle, each being on 

 a thick tapering ridge, 

 divided by a mesial sul- 

 cus ; from the re-entering 

 angles of these interradial 

 ridges four other ridges 

 extend to the middle of 

 the four straight sides, the 

 fifth space having no ridge, 

 but, instead, a large ovate 

 opening ; hydrospire slits 

 in four interradial areas, 

 but no hydrospire canals, 

 and no pores. Type C. 

 acutus. 



alternalus, Lyon, 1857, Geo. 

 Sur. Ky., vol. 3, p. 493. A 

 misprint for C. attenuatus. 

 americanus, Shumard, 1858, 

 Trans. St. Louis Acad. 

 Sci., vol. 1, p. 239, Up. 

 Held. Gr. Syn. (?) for 

 C. pyramidatus. 



attenuatus, Lyon ,1857, 



Geo. Sur. Ky., vol. M% 



3, p. 493-498, Up. 



Held Gr. 

 canadensis, Billings. 



Not defined, 

 gratiosus, S. A. Miller, 

 1880, Jour. Cin. Soc. 

 Nat. Hist, vol. 2, p. Kio.266.-Cod aster 

 9^7 Kpntntrr Th gratiosus. Summit 



&7.*eoKQK<*r. ine and side vlew of 

 hydrospire slits are cast, the latter 

 visible on the casts showing an aper- 

 but are very fine. ture at the summit. 



hindii, Etheridge & Carpenter, 1882, Ann. 

 and Mag. Nat. Hist., p. 235, Ham. Gr. 

 C. canadensis. (?) 



kentuckiensis, Shumard, 1858, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 239, Burling- 

 ton Gr. 



pentalobus, see Stephanocrinuspentalobus. 



FIG. 27. Codaster 



;r pulcn 

 side vie 



Ichellus. Summit and 

 ws. 



pulchellus, Miller & Dyer, 1878, Jour. Cin. 



Soc. Nat. Hist., vol. 1, p. 35, Niagara 



Gr. Possibly a Stephanocrinus. 

 pyramidatus, Shumard, 1858, Trans. St. 



Louis Acad. Sci., vol. 1, p. 238. Up. 



Held. Gr. 



