ECHINODERMATA. 



ventricosus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. bulging out.] 



ventricosus var. cancellatus, Hall, 1861, 

 Desc. New Crinoidea, Burlington Gr. 

 [Sig. cancellated.] 



ventricosus var. internodus, Hall, 1861, 

 Desc. New Crinoidea, Burlington Gr. 

 [Ety. inter, between; nodus, a joint.] 



verneuili, see Melocrinus verneuili. 



verneuilianus, see Eretmocrinus verneuili- 

 anus. 



verrucosus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. full of warts, 

 warty.] 



viaticus, White, 1874, Rep. Invert. Foss., 

 Lower Carb. [Ety. riaticus, a parting 

 repast — application not evident.] 



viminalis, Hall, 1863, Crinoidea in Wav. 

 Sandstone Ohio, Waverly Sandstone. 

 [Sig. bearing twigs for plaiting.] 



wachsmuthi, White, 1862, Proc. Bost. 

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

 [Ety. proper name.] 



whitfiebii, see sub-genus Saccocrinus whit- 

 fieldi. 



whitii, see Megistocrinus whitii. 



yandelli, Shumard, 1857, Trans. St. Louis 

 Acad. ScL, Lower Carb. [Ety. proper 

 name.] 

 Agaricocrinus, Troost, 1850, Catal. in Proc. 

 Am. Ass'n. [Ety. agarikon, a sort of 

 tree-fungus; krinon, a lily.] 



americanus, Roemer, 1854, (Amphora- 

 crinus americanus) Bronn's Leth. 

 Geog., vol. 2, Warsaw Gr. [Ety. proper 

 name.] 



bellatrema, see Amphoracrinus bellatrema. 



bullatus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. studded with 

 round knobs; bossed.] 



calyculus, Hall, 1860, Supp. to Geo. 

 Iowa, Warsaw Gr. [Sig. the cup of 

 a flower.] 



corrugatus, Hall, 1861, Desc. New Crin- 

 oidea, Burlington Gr. [Sig. corru- 

 gated.] 



excavatus, see Amphoracrinus excavatus. 



geometricus, Hall, 1860, Supp. to Geo. 

 Sur. Iowa, Burlington Gr. [Sig. geom- 

 etrical.] 



gracilis, Meek & Worthen, 1861, Proc. 

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

 [Sig. slender.] 



inflatus, Hall, 1861, Desc. New Crinoidea, 

 Burlington Gr. [Sig. inflated.] 



nodosus, Meek & Worthen, 1869, Proc. 

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

 [Sig. knobbed.] 



ornotrema, Hall, 1861, Desc. New Crin- 

 oidea, Burlington Gr. [Sig. not evi- 

 dent—the word may be a printer's 

 mistake for ornatotrema, having a 

 beautiful opening.] 



planoconvexus, Hall, 1861, Desc. New 

 Crinoidea, Burlington Gr. [Ety 

 planus, flat ; convexus, convex.] 



pentagonus, Hall, 1860, Supp. to Geo. Sur. 

 Iowa, Burlington Gr. [Sig. pentago- 

 nal.] 



pentagonus var. convexus, Hall, I860, 

 Supp. to Geo. Sur. Iowa, Burlington 

 Gr. [Sig. convex.] 



stellatus, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. covered with 

 stars.] 



tuberoms, Troost, 1849, Catal. This is the 

 same species described by Roemer as 

 Amphoracrinus americanus in Bronn's 

 Leth. Geognostica, vol. 2, 1852-54, and 

 by the rules of priority it must bear 

 Roemer's name, for Troost did not 

 figure or describe it. 



whitfieldi, Hall, 1858, Geo. Rep. Iowa, 

 Keokuk Gr. [Ety. proper name.] 



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

 Keokuk Gr. [Ety. proper name.] 

 Agassizocrinus, Troost, 1850, Ms. of Mon- 

 ograph Crinoidea. [Ety. Agassiz, the 

 eminent naturalist; krinon, a lily.] 



carbonarius, Worthen, 1873, Geo. Sur. 111., 

 vol. 5, Up. Coal Meas. [Ety. from 

 the Coal Measures."] 



conicus, Owen & Shumard, 1851, Jour. 

 Acad. Nat. Sci. Phil., 2d ser., vol. 2, 

 Chester Gr. [Sig. like a cone.] 



dactyliformis, Troost, 1850, as identified 

 by Shumard, 1853, Marcy's Rep. Red. 

 Riv., Chester Gr. [Sig. finger-shaped.] 



chesterensis, Worthen, 1873, Geo. Sur. 

 111., vol. 5, Chester Gr. [Ety. proper 

 • name.] 



constrictus, Hall, 1858, Geo. Rep. Iowa, 

 Kaskaskia Gr. [Sig. constricted.] 



gibbosus, Hall, 1858, Geo. Rep. Iowa, 

 Chester Gr. [Sig. gibbous.] 



globosus, Worthen, 1873, Geo. Sur. 111., 

 vol. 5, Chester Gr. [Sig. globose.] 



gracilis, Troost, 1850. Not defined.] 



occidentalis, Owen & Shumard, 1852, 

 ( Poteriocrinus occidentalis) Jour. 

 Acad. Nat. Sci. Phil., Chester Gr. 

 [Sig. western.] 



pentagonus. Worthen, 1873, Geo. Sur. 

 111., vol.5, Chester Gr. [Sig. pentag- 

 onal.] 



tumidus, Owen & Shumard, 1852, (Poter- 

 iocrinus tumidus) Jour. Acad. Nat. 

 Sci. Phil., Chester Gr. [Sig. tumid 

 or swollen.] 

 Agelacrinus, Vanuxem. 1842,( Agelacrinites) 

 Geo. Rep. 3rd Dist. N. Y. [Ety. agele, 

 a herd ; krinon, a lily.] 



billingsi, Chapman, 1860, Can. Jour., vol. 

 5, Trenton Gr. [Ety. proper name.] 



cincinnatiensis, Roemer, 1851, Verh. 

 ' Naturh, Rhein. Westph., vol. 8, Cin- 

 cinnati Gr. [Ety. proper name.] 



dicksoni, Billings, 1857. Rep. of Progr., 

 Trenton Gr. [Ety. proper name.] 



hamiltonensis, Vanuxem, 1842, Geo. Rep. 

 3rd Dist. N. Y., Ham. Gr. [Ety. 

 proper name.] 



kaskaskiensis, Hall, 1858, Geo. Rep. Iowa, 

 Kaskaskia Gr. [Ety. proper name.] 



