246 



ECHINODERMA TA. 



[BUS. GAU. 



EUSPIROCRINUS, Angelin, 

 1878, Iconogr. Cri- 

 noid Suec., p. 24. 

 [Ety. euspeires, 

 winding; krinon, 

 lily.] Calyx cyathi- 

 form ; basals 5; sub- 

 radials 5, large ; 

 radials 1x5, wider 

 than high, excavated 

 for the attachment 

 of the arms; 

 azygous area wide, 

 plates large ; ventral 

 tube composed of 

 large plates ; vault 

 covered with 'arge plates; 

 arms bifurcate. Type E. 

 spiralis. 



obconicus, W. R. Billings, 

 1885, Ottawa Field Nat. 

 Club, vol. 2, p. 248, Tren- 

 ton Gr. 



FIG. 306. Eospiro- 

 crinus obconicus. 



O^O^O 



FIG. 307. Euspirocrinus obconicus. Diagram. 



FORBESOCRINUS, DeKoninck & LeHon, 1854, 

 Resch. Grin. Carb. Belg., p. 118. [Ety. 

 proper name; krinon, lily.] Calyx 

 large, plates heavy ; basals 3 ; sub- 

 radials 5; primary radials 3 or 

 4x5; secondary radials 2 to 

 4 x 10 ; tertiary radials 2 to 4 x 20 ; 

 arms 50 to 60, long and sometimes 

 dividing; regular interradials 10 

 to 20 or more ; azygous interradi- 

 als numerous; interaxillaries 10 

 to 20. or more. Type F. nobilis. 



agassizi, Hall, 1858 and 1860, Geo. 

 Sur. of Iowa, p. 631, Burling- 

 ton Gr. 



agassizi var. giganteus, Meek & 

 Worthen, 1861, Proc. Acad. 

 Nat. Sci. Phil. p. 131, and Geo. 

 Sur. 111., vol. 3, p. 495, Burling- 

 ton Gr. 



atteriformis, see Onychocrinus as 

 teriformis. 



cestriensis, Hall, 1860, Supp. to Geo. 

 Iowa, p. 68, Kaskaskia Gr. 



communit, see Taxocrinus corn- 

 munis. 



giddingi, see Taxocrinus giddingi. 



juvenis, see Taxocrinus juvenis. 



kettoggi, see Taxocrinus kelloggi. 



lobatus, see Taxocrinus lobatus. 



lobatus var. tardus, see Taxocrinus 

 lobatus var. tardus. 



meeki, see Taxocrinus meeki. 



monroensis, see Onychocrinue monroensis. 



multibrachiatus, see Taxocrinus mul- 



tibrachiatus. 



norwoodi, see Onychocrinus norwoodi. 

 nuntius, see Taxocrinus nuntius. 

 parvus, Wetherby, 1879, Jour. Gin. Soc. 



Nat, Hist., vol. 2, p. 138, Kaskaskia Gr. 



FIG. 308. Forbesocrinus wortlieni. 



pratteni, see Melocrinus pratteni. 



ramulosus, Lyon & Casseday, see Ony- 

 chocrinus ramulosus. 



ramulosus, Hall, see Taxocrinus ramulosus. 



saffordi, see Taxocrinus saffordi. 



semiovatus, see Taxocrinus semiovatus. 



shumardanus, see Taxocrinus shumardanus. 



spiniger, see Taxocrinus spiniger. 



subramulosus, Shumard, 1866, syn. for 

 Taxocrinus ramulosus. 



thiemii, see Taxocrinus thiemii. 



whitfieldi, see Taxocrinus whitfieldi. 



wortheni, Hall, 1858, Geo. Rep. Iowa, p. 

 632, Keokuk Gr. 



i 



-,- 



FIG. 309.-Qaurocrlnus nealll. Diagram. 



GAUROCRINUS, S. A. Miller, 1883, Jour. Gin. 

 Soc. Nat. Hist., vol. 6, p. 228. [Ety. 

 gauron, haughty ; proud ; krinon, lily.] 



