ECHINODERMATA. 



Acrocrixus, Yandell, 1855, Am. Jour. Sci., 



vol. 20. [Ety. akros, the summit; 



krinon, lily.] 

 shumardi, Yandell, 1855, Am. Jour. Sci., 



vol. 20, Kaskaskia Gr. [Ety. proper 



name.] 

 urniformis, Hall, 1858, Geo. Rep. Iowa, 



Kaskaskia Gr. [Sig. urn-shaped.] 

 Actixoi kin-us, Miller, 1821, Nat. Hist. Crin- 



oidea. [Ety. aktin, a ray or thorn; 



krinon, a lily.] 

 abnormis, see Megistocrinus abnormis. , 

 segilops, see Strotocrinus regilops. 

 sequalis, see Batocrinus aequalis. 

 sequibrachiatw, see Batocrinus aequibrachi- 



atus. 

 sequibrachiatus var. alatus, see Batocrinus 



sequibrachiatus var. alatus. 

 agassizi, Troost, 1850, Catal. Not defined, 

 althea, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. mythological 



name.] 

 amplus, Meek & Worthen, 1861, Proc. 



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



[Sig. full sized.] 

 andrewsianus, syn. for Eretmocrinus verne- 



uilianus. 

 araneolus, see Steganocrinus araneolus. 

 asterias, McChesney, 1860, Desc. New 



Pal. Foss., Burlington Gr. [Sig. in 



the fashion of a star.] 

 asteriscus, see Batocrinus asteriscus. 

 biturbinatus, Hall, 1858, Geo. Rep. Iowa, 



Keokuk Gr. [Sig. double cone- 

 shaped.] 

 brevicornis, Hall, 1858, Geo. Rep. Iowa, 



Burlington Gr. [Sig. short-horned.] 

 brevis, Hall, 1858, Geo. Rep. Iowa, Bur- 

 lington Gr. [Sig. short.] 

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



Iowa, Warsaw Gr. [Ety. mythologi- 

 cal name.] 

 cselatus, Hall, 1858, Geo. Sur. Iowa, Bur- 

 lington Gr. [Sig. carved in relief, 



sculptured.] 

 calyculoides, see Eretmocrinus calycu- 



loides. 

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



Warsaw Gr. [Sig. a little cup or 



flower-bud.] 

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



Ham. Gr. [Ety. mythological name.] 

 cassedayi, Lyon, 1861, Proc. Acad. Nat. 



Sci. Phil., Up. Held. Gr. [Ijjiy. proper 



name.] 

 carica, see Batocrinus carica. 

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



Iowa, Warsaw Gr. [Ety. proper 



name.] 

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



Y., Ham. Gr. [Sig. the small stalk or 



stem of a plant.] 

 chloris, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. mythological 



name.] 

 christyi, Shumard, 1855, see Batocrinus 



christyi. 



christyi, Hall, 1863, see Saccocrinus 

 christyi. 



clarus, Hall, 1861, Desc. New Crinoidea, 

 Burlington Gr. [Sig. brilliant, illus- 

 trious.] 



clavigerus, see Batocrinus clavigerus. 



clio, see Eretmocrinus clio. 



clivosus, Hall, 1861, Jour. Bost. Soc. Nat. 

 Hist, vol. 7, Burlington Gr. [Sig. 

 hilly.] 



clcelia, see Eretmocrinus clcelia. 



clypeatus, Hall, 1860, Supp. Geo. Sur. 

 Iowa, Burlington Gr. [Sig. shield- 

 like.] 



concavus, see Ccelocrinus concavus. 



concinnus, Shumard, 1855, Geo. Rep. 

 Mo., Burlington Gr. [Sig. handsome.] 



corbulis, see Batocrinus corbulis. 



coreyi, Lyon & Casseday, 1859, Am. Jour. 

 Sci., Burlington Gr. [Ety. proper 

 name.] 



corniculum, Hall, 1858, Geo. Rep. Iowa, 

 Burlington Gr. [Ety. corniculum, a 

 little horn — from the urn-shaped body 

 below. ] 



cornigerus, Hall, 1858, see Dorycrinus cor- 

 nigerus. 



cornigerus, Lyon & Casseday, 1859, Am. 

 Jour. Sci., vol. 28. This name being 

 preoccupied, Shumard proposed for 

 this species A. kentuckiensis. 



cornutus, Troost, 1850, Catal. Not defined. 



coronatus, Hall, 1860, Supp. to Geo. Sur*. 

 Iowa, Burlington Gr. [Sig. crowned.] 



daphne, Hall, 1863, Crin. Wav. Sands. 

 Ohio, Waverly Gr. [Ety. mythologi- 

 cal name.] 



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

 Iowa, Burlington Gr. [Sig. without 

 horns.] 



delicatulus, Meek & Worthen, 1869, Proc. 

 Acad. Nat. Sci. Phil. Burlington Gr. 

 [Sig. rather delicate.] 



desMeratus, see Dorycrinus desideratus. 



discoideus, see Batocrinus discoideus. 



divarwatus, see Dorycrinus divaricatus. 



divergent, see Amphoracrinus divergens. 



dodecadactylus, see Batocrinus dodecadac- 

 tylus. 



doris, see Batocrinus doris. 



eicosidactylus, see Batocrinus icosidac- 

 tylus. 



erodus, Hall, 1861, Desc. New Crinoidea, 

 Burlington Gr. [Ety. erosus, eroded, 

 having the parts jagged as if gnawed.] 



eryx, Hall 1861, Desc. New Crinoidea, 

 Burlington Gr. [Ety. mythological 

 name.] 



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

 Y., Ham. Gr. [Ety. eu, very ; charis, 

 beauty.] • 



evansi, Owen & Shumard, 1850, Jour. 



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

 lington Gr. [Ety. proper name.] 



excerptus, Hall, 1861, Desc. New Crin- 

 oidea, Burlington Gr. [Sig. picked 

 out, selected.] 



fibula, Troost, 1850, Catal. Not defined. 



