248 



ECHINODERMA TA. 



[gly. 



scondary radials 1 or more by 10; 

 tertiary radials usually present ; arms 

 10 to 20 or more, bearing pinnules; 

 first interradial resting upon tEe" first 



Kio. 314.— Glyptocrlnus decadactylus. Diagram. 



primary radials, and followed by sue- j 

 ceeding ranges of two or more, which 

 graduate into the vault; vault slightly 

 convex, with sunken in- 

 terradial areas ; plates 

 becomi ng smaller as they 

 approach the inner face 

 of the arms, and becom- 

 ing a somewhat granular 

 continuous cover over 

 the ambulacral furrows ; 

 excurrent opening sub- 

 central on the upper face 

 of the vault; column Kiosw.-uiypto- 

 round, without base or orloM deca- 

 roots for attachment. dii<-tyiu«i. 

 Type G. decadactylus. 

 angularis, see Gaurocrinus annularis. 



argutus, Walcott, 1883, 

 S5th Rep. N. J 

 Mus. Nat. Hist., p. 207, 

 Trenton Gr. 

 armosus, see Siphonocri- 



nus armosus. 

 baeri, see Xenocrinus 



baeri. 

 carleyi, see Mariacrinus 



carleyi. 

 cognatus, see Gaurocrinus 



cognatus. 

 decadactylus, Hall, 1847, 

 Pal. N. Y., vol. 1, p. 

 281, Hud. Riv. Gr. 

 dyeri, Meek, 1872, Proc. 

 Acad. Nat, Sci. Phil., p. 

 314, and Ohio Pal., vol. 

 1, p. 32, Hud. Riv. Gr. 

 dyeri var. sublaevis, S. 

 A. Miller, 1878, Jour. Cin. Soc. Nat. 

 Hist., vol. 1, p. 103, Hud. Riv. Gr. 



Fig. 316. — Glyp- 

 tocrinus forn- 

 shelli. 



fimbriatus, Shumard, 1855, Geo. Sur. Mo., 



p. 194, Trenton Gr. 

 fornshelli, S. A. Miller, 1874, Cin. Quar. 

 Jour. Sci.. vol. 1, p. 348, Hud. Riv. Gr. 

 gracilii', Wetherby, syn. for Gaurocri- 



nus angularis. 

 liarrisi, see Compsocrinus harrisi. 

 lacunosus, see Archseocrinus lacunosus. 

 libanus, Safford, 1869, Geo. of Tenn. 



Not defined. 

 marginatus, see Archa_ j ocrinus mar- 



ginatus. 

 miamiensis, S. A. Miller, 1882, Jour. 



Cin. Soc. Nat. Hist., vol. 5, p. 34, 



Hud. Riv. Gr. 

 nealli, see Gaurocrinus nealli. 

 nobilis, see Siphonocrinus nobilis. 

 ornatus, Billings, 1857, Rep. of Progr. 



Geo. Sur. Can., p. 260, and Can. Org. 



Rem., Decade 4, p. 60, Trenton Gr. 

 parvus, Hall, 1872, 24th Rep. N. Y. 



St. Mus. Nat. Hist., p. 207, Had. 



Riv. Gr. 

 pattersoni, S. A. Miller, L882, -lour. 



Cin. Soc. Nat. Hist., vol. 5, p. 80, 



Utica Slate Gr. 

 plumosus, Hall, 1843, (Actinocrinus 



plumosus,) Geo. Rep. 4th Dist. N. Y., 



p. 72, and Pal. N. Y., vol. ft, p. 180, 

 Clinton Gr. Founded upon fragments 

 too poor for even generic determina- 

 tion, 

 priscus, Billings, 1857, Ren. of Progr, ( too. 

 Sur. Can., p. 257, and Can. Org Rem., 

 Decade 4, p. 56, Black Hi v. and Tren- 

 ton < .IS. 



quinquepartitus, Billings, 1859, Can. Org. 

 Rem., Decade 4, pi. 8, fig. 4a, 4b, Tren- 

 ton (ir. 



ramulosus, Billings, 1856, Can. Nat. Geo., 

 vol. 1, and Can. Org. Rem., Decade 4, 

 p. .")7, Trenton Gr. 



ricliardsoni, Wetherby, 1880, Jour. Cin. 

 Soc. Nat. Hist., vol. 2, p. 245, Hud. 

 Riv. Gr. 



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

 Boc. Nat. Hist., vol. 5, p. 37, Hud. 

 Riv. (ir. 



ftititl'n-i, see Pycnocrinus shafferi. 



shafferivar. germanus, see Pycnocrinus ger- 

 manus. 



8iphonatU8, Hall, 1861, syn. for Siphono- 

 crinus armosus. 



subglobosus, Meek, 1873, (G. dyeri var 

 subglobosus,) Pal. Ohio, vol. 1, p. 34, 

 Hud. Riv. Gr. 



subnodosus, see Rhaphanocrinus subno- 

 dosus. 

 Glyptocystites, Billings, 1854, Can. Jour., 

 vol. 2, p. 215, and Can. Org. Rem., Dec- 

 ade 3, p. 53. [Ety. glyptos, sculptured ; 

 ku&tis, bladder.] Body elongate, cylin- 

 drical ; four series oi plates, 4 in the 

 basal and 5 in each succeeding series ; 

 mouth in one of the plates of the sec- 

 ond series; ambulacral orifice at the 

 center of the summit where it receives 

 the five ambulacral grooves ; arms re- 

 cumbent upon the apex of the fossil, 



