ECHINODERMATA. 



subspinosus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. somewhat spiny.] 



subspinulosus, Hall, 1860, Supp. to Geo. 

 Iowa, Burlington Gr. [Sig. somewhat 

 full of little spines.] 



tennesseensis, Roemer, 1860, 80. Fauna 

 West Tenn., Niagara Gr. [Ety. proper 

 name.] 



tentaculatus, Hall, 1859, Pal. N. Y., vol. 

 3, Low. Held. Gr. [Sig. having 

 feelers.] 



tenuibrachiatus, Meek & Worthen, 1869 

 Proc. Acad. Nat. Sei. Phil., Burling- 

 ton Gr. [Sig. slender-armed.] 



truncatulus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. somewhat trun 

 cated.] 



truncatus, Hall, 1858, Geo. Rep. Iowa 

 Burlington Gr. [Sig. truncated, cut 

 short.] 



tuberosus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. covered with 

 protuberances. ] 



verrucosus, White, 1863, Jour. Bost. Soc. 

 Nat. Hist., vol. 7, Burlington Gr. 

 [Sig. covered with wart-like projec- 

 tions.] 

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



1, pt. 2, Burlington Gr. [Ety. proper 

 name.] 



yandelli, Owen & Shumard, 1850, Jour. 

 Acad. Nat. Sci., 2d ser., vol. 2, Bur- 

 lington Gr. [Ety. proper name.] 

 Pleurocystites, Billings, 1854, Can. Jour., 

 vol. 2. [Ety. pleuron, the side ; kustis, 

 a bladder.] 



anticostiensis, Billings, 1857, Rep. of 

 Progr. Hud. Riv. Gr. [Ety. proper 

 name.] 



elegans, Billings, 1857, Rep. of Progr., 

 Trenton Gr. [Sig. elegant.] 



exornatus, Billings, 1857, Rep. of Progr., 

 Trenton Gr. [Sig. adorned.] 



filitextus, Biljings, 1854, Can. Jour., vol. 



2, Trenton Gr. [Sig. woven like 

 thread.] 



robustus, Billings, 1854, Can. Jour., vol. 



2, Trenton Gr. [Sig. robust.] 

 squamosus, Billings, 1854, Can. Jour., 



vol. 2, Trenton Gr. [Sig. scaly.] 

 Pokocrinus, Billings, 1857, Rep. of Progr. 



[Ety. from the poriferous areas sim- 

 ilar to the pectinated rhombs of the 



cystidea.] 

 conicus, Billings, 1857, Rep. of Progr., 



Trenton Gr. [Sig. conical.] 

 crassus, Meek & Worthen, 1868, Geo. 



Sur. 111., vol. 3, Cin'ti Gr. [Sig. thick.] 

 pentagonus, Meek & Worthen, 1865, Proc. 



Acad. Nat. Sci., Phil., Cin'ti Gr. [Sig. 



five-cornered.] 

 Poteriocrinus, Miller, 1821, Nat. Hist. Cri- 



noidea. [Ety. poterion, a goblet ; 



krinon, a lily.] 

 aequalis, Hall, 1860, Supp. to Geo. Iowa, 



Burlington Gr. [Sig. equal.] 

 alternatus, see Homocrinus alternatus. 



barrisi, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. proper name.] 

 bayensis, see Scaphiocrinus bayensis. 

 bisselli, Worthen, 1873, Geo. Sur. 111., 



vol. 5, Chester Gr. [Ety. proper 



name. ] 

 bursiformis, White, 1862, Proc. Bost. Soc. 



Nat. Hist., vol. 9, Burlington Gr. 



[Sig. purse-shaped.] 

 caducms, see Dendrocnnus caduceus. 

 calyculus, Hall, 1858, Geo. Rep. Iowa, 



Burlington Gr. [Sig. a little cup.] 

 carbonarius, see Scaphiocrinus carbona- 



rius. 

 carinatus, Meek & Worthen, 1861, Proc. 



Acad. Nat. Sci. Phil., Burlington Gr. 



[Sig. keeled.] 

 concinnus, Meek & Worthen, 1870, Proc. 



Acad. Nat. Sci. Phil., Keokuk Gr. 



[Sig. handsome.] 

 coreyi, AVorthen, 1875, Geo. Sur. 111., vol. 



6, Keokuk Gr. [Ety. proper name.] 

 corycia, Hall, 1863, Crin. Wav. Sands. 



Ohio, Waverly Gr. [Ety. mythologi- 

 cal name.] 

 crineus, Hall, 1863, Crin. Wav. Sands. 



Ohio, Waverly Gr. [Sig. hairy.] 

 cultidactylus, Hall, 1860, Supp. to Geo. 



Iowa, Burlington Gr. [Sig. elegantly 



fingered.] 

 cylindricus, Lyon, 1860, Trans. Am. Phil. 



Soc, vol. 13, Devonian. [Sig. cylin- 

 drical.] 

 decadactyhw, see Scaphiocrinus decadac- 



tylus. 

 diffusus, Hall, 1862, 15th Reg. Rep. N. Y., 



Ham. Gr. [Sig. spread-out.] 

 dilatatus, see Coeliocrinus dilatatus. 

 divaricatus, Hall, 1860, Supp. to Geo. 



Iowa, Warsaw Gr. [Sig. spread-out.] 

 enormis, see Cyathocrinus enormia. 

 florcalis, see Zeacrinus florealis. 

 fusiformis, Hall, 1861, Desc. New Crinoi- 

 dea, Burlington Gr. [Sig. spindle- 

 shaped.] 

 gracilis, see Homocrinus gracilis, 

 hardinensis, Worthen, 1873, Geo. Sur. 



111., vol. 5, St. Louis Gr. [Ety. proper 



name.] 

 hemisphericus, Shumard, 1858, Trans. St. 



Louis Acad. Sci., Coal Meas. [Sig. 



hemispherical.] 

 hoveyi, Worthen, 1875, Geo. Sur. 111., 



vol. 6, Keokuk Gr. [Ety. proper 



name.] 

 indentus, Hall, 1862, 15th Reg. Rep. N. 



Y., Ham. Gr. [Sig. indented.] 

 indianensis, Meek & Worthen, 1865, 



Proc. Acad. Nat. Sci. Phil., Keokuk 



Gr. [Ety. proper name.] 

 keokuk, Hall. 1860, Supp. to Geo. Rep. 



Iowa, Keokuk Gr. [Ety. proper 



name.] 

 lasallensis, AVorthen, 1875, Geo. Sur. 111., 



vol. 6, Coal Meas. [Ety. proper name.] 

 lepidus, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Sig. elegant.] 



