ECHINODERMATA. 



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



Ham. Gr. [Ety. mythological name.] 

 melo, see Granatocrinus melo. 

 missouriensis, Swallow, 1863, Trans. St. 



Louis Acad. Sci., Low. Carb. [Ety. 



proper name.] 

 norwoodi, see Granatocrinus norwoodi. 

 obesus, Lyon, 1857, Geo. Sur. Ky., vol. 3, 



Kaskaskia Gr. [Sig. fat, plump in 



form.] 

 obliquaius, syn. for P. laterniformis. 

 oralis, Owen. Not defined, 

 pyriformis, Say, 1825, Jour. Acad. Nat. 



Sci. Phil., vol. 4, Kaskaskia Gr. [Sig. 



from the pyriform body.] 

 . reinwardti, Troost, 1835, Trans. Geo. Soc. 



Penn., vol. 1, Niagara Gr. [Ety. 



proper name.] 

 robustus, Lyon, 1860, Trans. St. Louis 



Acad. Sci., Low. Carb. [Sig. robust.] 

 roemeri, see Granatocrinus roemeri. 

 sayi, see Granatocrinus sayi. 

 sirius, White, 1862, Proc. Bost. Soc. Nat. 



Hist., vol. 9, Burlington Gr. [Ety. 



sirius, the dog star.] 

 stelliformn, see Codonites stelliformis. 

 subconoideus, Meek, 1872, Hayden's Geo. 



Rep. Low. Carb. [Sig. somewhat 



cone-like.] 

 subcylindricus, Hall & AVhitfield, 1875, 



Ohio Pal., vol. 2, Niagara Gr. [Sig. 



somewhat cylindrical.] 

 subtruncatus, Hall, 1858, Geo. of Iowa, 



Ham. Gr. [Sig. somewhat truncated.] 

 sulcatus, Roemer, 1852, Monog. Blastoid., 



Kaskaskia Gr. [Sig. furrowed.] 

 symmetricus, Hall, 1858, Geo. Rep. Iowa, 



Kaskaskia Gr. [Sig. symmetrical.] 

 tennesseese, Troost. Not defined, 

 troosti, Shumard, 1866, Trans. St. Louis 



Acad. Sci , Kaskaskia Gr. [Ety. proper 



name.] 

 truncatus, Conrad, 1843, Proc. Acad. Nat. 



Sci. Phil., Warsaw Gr. [Sig. trun- 

 cated.] 

 -v^rsouviensis, Worthen, 1875, Geo. Sur. 



111., vol. 6, St. Louis Gr. [Ety. proper 



name.] 

 verneuili, see Nucleocrinus verneuili. 

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



Ham. Gr. [Ety. proper name.] 

 woodmani, Meek & Worthen, 1868, Proc. 



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



[Ety. proper name.] 

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



Keokuk Gr. [Ety. proper name.] 

 Petraster, Billings, 1858, Can. Org. Rem., 



Decade 3. [Ety. petros, a stone; aster, 



a star.] Prof. Hall regards this genus 



as a synonym for Palseaster. 

 bellulus, Billings, 1865, Pal. Foss., vol. 1, 



Niagara Gr. [Sig. pretty.] 

 rigidus, Billings, 1857, (Palaeasterina rigi- 



dus) Rep. of Progr., Trenton Gr. [Sig. 



rigid.] 

 wilberianus, see Palseaster wilberianus. 

 Philocrinus, Koninck, 1863. [Ety. philos, 



favorite ; krinon, a lily.] 



pelvis, Meek & Worthen, 1865, Am. Jour. 



Sci., 2nd series, vol. 39. Syn. for 



Erisocrinus typus. 

 Pholidocidaris, Meek & Worthen, 1869, 



Proc. Acad. Nat. Sci. Phil. [Ety. 



pholidos, a scale ; kideris, a turban.] 

 irregularis, Meek & Worthen, 1869, Proc. 



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



[Sig. irregular.] 

 Physetocrinus, Meek & Worthen, 1869, 



Proc. Acad. Nat. Sci. Phil. [Ety. 



j)hysetos, blown up, inflated ; krinon, a 



liiy-J 



asper, Meek & Worthen, 1869, Proc. 

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

 [Sig. rough.] 



dilatatus, Meek & Worthen, 1869, (Stro- 

 tocrinus dilatatus) Proc. Acad. Nat. 

 Sci. Phil., Burlington Gr. [Sig. spread 

 out.] 



subventricosus, McChesney, 1860, (Acti- 

 nocrinus subventricosus) Desc. New 

 Pal. Foss., Burlington Gr. [Sig. some- 

 what ventricose.] 

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

 noidea. [Ety. platys, flat; krinon, a 



lily-] 



eequalis, Hall, 1861, Desc. New Crin., 

 Burlington Gr. [Sig. equal.] 



americanus, Owen & Shumard, 1852, Jour. 

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

 lington Gr. [Ety. proper name.] 



anndixoni, Troost. Not defined. 



asper, Meek & Worthen, 1861, Proc. 

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

 [Sig. rough.] 



bedfordensis, Hall & Whitfield, 1875, Ohio 

 Pal., vol. 2,»Erie shales. [Ety. proper 

 name.] 



brevinodus, Hall, 1861, Desc. New Cri- 

 noidea, Keokuk Gr. [Sig. short- 

 knotted.] 



burlingtonensis, Owen & Shumard, 1850, 

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

 Burlington Gr. [Ety. proper name.] 



calyculus, Hall, 1861, Desc. New Crinoi- 

 "dea, Burlington Gr. [Sig. a little cup.] 



canaliculars, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Sig. channeled, 

 grooved.] 



cavus, Hall, 1858, Geo. Rep. Iowa, vol. 1, 

 pt. 2, Burlington Gr. [Sig. hollow, 

 concave.] 



clytis, Hall, 1861, Desc. New Crinoidea, 

 " Burlington Gr. [Sig. remarkable.] 



contritus, Hall, 1863, Crin. Wav. Sands. 

 Ohio, Waverly Gr. [Sig. worn out.] 



corrugatus, Owen & Shumard, 1850, Jour. 

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

 ton Gr. [Sig. corrugated, wrinkled.] 



depressus, Owen. Not defined. 



discoideus, Owen & Shumard, 1850, Jour. 

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

 lington Gr. [Sig. quoit-shaped, disc- 

 like.] 



eboraceus, Hall, 18 2. 15th Reg. Rep. N. 

 Y., Ham. Gr. [Ety. eboracum, Latin 

 name for York.] 



