^0 



ECHINODERMAtA. 



pileus, Hall, 1866, Pamphlet, Cin'ti Gr. 

 [Ety. pikus, a felt cap or hat made to 

 fit close.] 



squamosus, Meek & Worthen, 1868, Proc. 

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

 [Sig. covered with scales.] 



Mlatus, see Hemioystites stellatus. 



vorticellatus. Hall, 1866, Pamphlet, Cin- 

 cinnati Gr. [Sig. whorled.] 

 ALLOPROS.tLLocRiuus, Casseday & Lyon, 

 1860, Proc. Am. Acad. Arts & Sci., 

 vol. 5. [Ety. alhproaallos, inclining 

 first to one side and then to another ; 

 hrinon, a lily.] 



conicus, Casseday & Lyon, 1S60, Proc. 

 Am. Acad. Arts & Sci., vol. 5, Warsaw 

 Gr. [Sig. conical.] 



euconus. Meek & Worthen, 1865, Proc. 

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

 [Ety. eu, perfect ; konos, cone.] 



depressus, Casseday & Lyon, 1860, Proc. 

 Am. Acad. Arts & Sci., vol. 5, Warsaw 

 Gr. [Sig. depressed.] 



lea;, Troost, 1850, (Conocrinus lese). Not 

 defined. 



tubercidosus, Troost, 1850, (Conocrinus 

 tuberculosus). Not defined. 

 Amphoracrinus, Austin, 1848, Quar. Jour. 

 Geo. Soc. Lond., vol.4. Sub-genus of 

 Actinocrinus. [Ety. amphora, a cup 

 or goblet ; krinon, a lily.] 



americanus, see Agaricocrinus americanus. 



bellatrema. Hall, 1861, (Actinocrinus 

 bellatrema) Jour. Bost. Soc. Nat. Hist., 

 vol. 7, Burlington Gr. [Sig. beautiful 

 opening.] 



divergens. Hall, 1860, (Actinocrinus di- 

 vergens) Supp. Geo. Rep. Iowa, Bur- 

 lington Gr. [Sig. separating.] 



excavatus. Hall, 1861, (Actinocrinus ex- 

 cavatus) Desc. New Crinoidea, Bur- 

 lington Gr. [Sig. hollowed out.] 



infiatus. Hall, 1861, (Actinocrinus in- 

 flatus) Desc. New Crinoidea, Burling- 

 ton Gr. [Sig. inflated.] 



planobasalis. Hall, 1858, (Actinocrinus 

 planobasalis) Geo. Pep. Iowa, Bur- 

 lington Gr. [Sig. flat-based.] 



quadrispinus. White, 1862, (Actinocrinus 

 quadri.spinus) Proc. Bost. Soc. Nat. 

 Hist., vol. 8, Burlington Gr. [Sig. 

 four-spined.] 



spinobrachiatus. Hall, 1860, (Actinocri- 

 nus spinobrachiatus) Supp. Geo. Rep. 

 Iowa, Burlington Gr. [Sig. spiny 

 armed.] 

 Amygdalocystites, Billings, 1854, Can. Jour., 

 vol. 2. [Ety. amygdalos, an almond ; 

 kustis, a bladder.] 



florealis, Billings, 1854, Can. Jour., vol. 

 2, Trenton Gr. [Sig. flower-like.] 



radiatus, Billings, 1854, Can. Jour., vol. 

 2, Trenton Gr. [Sig. radiating from a 

 point] 



tenuistriatuB, Billings, 1854, Can. Jour., 

 voL 2, Trenton Gr. [Sig. finely 

 striated.] 



Ancykocrinds, Hall, 1862, 15th Reg. Rep. 



N. Y. [Ety. aiikura, a grapnel ; hnnon, 



a lily.] 

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



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

 spinosus. Hall, 1862, loth Reg. Rep. N. 



Y., Up. Held. Gr. [Sig. covered with 



many spines.] 

 Akomalocrixus, Meek & Worthen, 1868, 



Geo. of 111., vol. 3. [Ety. anomoa, ir- 

 regular; kriruni, a lily.] 

 incurvus. Meek & Worthen, 1865, (Heter- 



ocrinus incurvus) Proc. Acad. Nat. 



Sci. Phil. [Ety. from one incurved 



arm.] 

 Anomalocystites, Hall, 1859, Pal. N. Y., 



vol.3. [Ety. anomo«, irregular; kustis, 



a bladder.] Prof. Billings regards 



this genus as a synonym for Ateleocy- 



stiUs. 

 balanoides. Meek, 1872, Am. Jour. Sci., 



3rd ser., vol. 3. [Sig. resembling the 



shell of the Balania.'] 

 cornutus. Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. horned.] 

 disparilis, Hall, 1859, Pal. N. Y., vol. 3, 



Oriskany sandstone. [Sig. different.] 

 Apiocystites, Forbes, 1848, Mem. Geo. Sur. 



Great Brit. [Ety. apion, a pear ; kiistig, 



a bladder.] A. syn (?) for Lepado- 



crinus. 

 canadensis, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. proper 



name.] 

 elegans. Hall, 1852, Pal. N. Y., vol. 2, 



Niagara Gr. [Sig. elegant.] 

 huronensis, Billings, 1866, Catal. Sil. 



Foss. Antic, Niagara Gr. [Ety. 



proper name.] 

 im.igo, Hall, 1867, 20th Reg. Rep., Niagara 



Gr. [Ety. imago, an image, likeness, 



perfect state.] 

 tecumseth, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. proper 



name.] 

 Arch^ocidaris, JlcCoy, 1844, Carb. Foss., 



Ireland. [Ety. archaios, ancient; 



cidaris, a turban.] 

 aculeatus, Shumard, 1858, Trans. St. Louis 



Acad. Sci., Permian Gr. [Sig. armed 



with sharp points.] 

 agassizi. Hall, 1858, Geo. Rep. Iowa, 



Kaskaskia Gr. [Ety. proper name.] 

 biangulatus, Shumard, 1858, Trans. St. 



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



double-angled.] 

 cratis. White, 1876, Geol. of Uinta Moun- 

 tains, Lower Aubrey Gr. [Sig. like a 



basket.] 

 gracilis, Newberry, 1861, Ives, Col. Ex. 



Ex., Up. Carb. [Sig. slender.] 

 keokuk. Hall, 1858, Geo. Rep. Iowa, Kas- 

 kaskia Gr. [Ety. proper name.] 

 longispinus, Newberry, 1861, Ives, Col. 



Ex. Ex., Up. Carb. [Sig. long-spined.] 

 megastylus, Shumard, 1858, Trans. St. 



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



having large spines.] 



