ECHINODERMATA. 



71 



mucronatus, Meek & Worthen, 1860, Proc. 



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



[Sig. sharp-pointed.] 



norwoodi. Hall, 1858, Geo. Eep. Iowa, 



Kaskaskia Gr. [Ety. proper name.] 



ornatus, Newberry, 1861, Ives, Col. Ex. 



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

 shumardiana, Hall, 1858, Geo. Rep. Iowa, 



Kaskaskia Gr. [Ety. proper name.] 

 triserrata, Meek, 1872, Pal. E. Neb., Up. 



Coal Meas, [Sig. three-notched.] 

 trudifera. White, 1874, Rep. Invert. Foss., 



Carb. [Sig. bearing a pike.] 

 vemeuiUana, Swallow, 1858, Trans. St.Louis 

 Acad. Sci. This name was preoccu- 

 pied by King, and the species is now 

 known as A. aculeatus. 

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

 Kaskaskia Gr. [Ety. proper name.] 

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

 [Ety. aspii, shield ; krinon, a lily.] 

 • callosus, Hall, 1859, Pal. N. Y., vol. 3, 

 Low. Held. Gr. [Sia;. thick-skinned.] 

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



Low. Held. Gr. [Sig. fingered.] 

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

 3, Low. Held. Gr. [Sig. from the 

 scutelliform base.] 

 Asterias, Lamarck, 1815, Hist. Nat. Anim. 

 sans. Vert. 

 anthoni, see Paleeaster jamesi. 

 antiqua, see Paleeaster antiqua. 

 antiquata, see Paleeaster antiquata. 

 matutina, see Paleeaster matutina. 

 AsterocrinuB, Lyon, 1857, Geo. Sur. Ky., vol. 

 3. This name was preoccupied by 

 Munster. See Pterotocrinus. 

 capitalis, see Pterotocrinus capitalis. 

 coronarma, see Pterotocrinus coronarius. 

 Astrios, Troost, 1850, Catalogue. Not defined. 



tennesseea;, Troost, 1850. Not defined. 

 Astrocrinites, Conrad in Catalogue Ann. Geo. 

 Rep., 1840-41. This name was pro- 

 posed but not defined, moreover the 

 name was preoccupied. 

 pachydactylus, see Mariacrinus pachydac- 

 tylus. 

 Ataxocrinm, Lyon, 1869, syn. for Anomalo- 

 crinus. 

 capcmiformis, syn. for Anomalocrinus in- 

 curvus. 

 Ateleocystites, Billings, 1858, Can. Org. 

 Rem., Decade 3. [Ety. ateles, defective 

 or incomplete; kustis, a bladder.] 

 Professor Billings regards Hall's genus 

 Anomalocystites, and DeKoninck's genus 

 Placocystites as congeneric with this 

 genus and therefore synonyms, 

 huxleyi, Billings, 1858, Can. Org. Rem., 

 Decade 3, Trenton Gr. [Ety. proper 

 name.] 

 Balanocrinvs, Troost, 1850. This name was 

 pre-occupied. See Lampterocrmus. 

 inflatus, see Lampterocrinus inflatus. 

 Bakychinus, Wachsmuth, 1868, Proc. Acad. 

 Nat. Sci. [Ety. barus, heavy; knnon, 

 a lily.] 



geometricus, Meek & Worthen, 1873, 

 Geo. Sur. 111., vol. 5, Keokuk Gr. [Sig. 

 geometrical.] 



hercules, Meek & Worthen, 1868, Proc. 

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

 [Ety. mythological name.] 



hoveyi. Hall, 1861, (Cyathocrmus hoveyi) 

 Desc. New Grin., Keokuk Gr. [Ety. 

 proper name.] 



magnilicus, Meek & Worthen, 1868, Proc. 

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

 [Sig. large-sized.] 



mammatus, Worthen, 1873, Geo. Sur. 

 111., vol. 5, Keokuk Gr. [Sig. covered 

 with protuberances.] 



pentagon us, Worthen, 1873, Geo. Sur. 

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

 onal.] 



spectabilis. Meek & Worthen, 1869, Proc. 

 Acad. Nat. Sci. Phil., St. Louis Gr. 

 [Sig. notable or worth seeing.] 



striatus, Worthen, 1875, Geo. Sur. 111., 

 vol. 6. Keokuk Gr. [Sig. striated.] 



subtumidus. Meek & Worthen, 1869, 

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

 Gr. [Sig. somewhat tumid or as if 

 blown up.] 



thomee, Hall, 1860, (Cyathocrinusthomee) 

 Supp. Geo. Sur. Iowa, St. Louis Gr. 

 [Ety. proper name.] 

 B.\TOCRiNus, Casseday, 1869, Proc. Acad. 

 Nat. Sci. Phil. [Ety. batos, a prickly 

 bush ; krinxm, a lily.] 



Eequalis, Hall, 1858, (Actinocrinus 

 eequalis) Geo. Rep. Iowa, Burlington 

 Gr. [Sig. equal.] 



eequibrachiatus, McChesney, 1860, (Acti- 

 nocrinus sequibrachiatus) New Pal. 

 Foss., Burlington Gr. [Sig. equal- 

 armed.] 



eequibrachiatus var. alatus, Hall, 1861, 

 (Actinocrinus eequibrachiatus var. ala- 

 tus) Bost. Jour. ijat. Hist., vol. 7, Bur- 

 lington Gr. [Sig. winged'.] 



asteriscus, Meek & Worthen, 1860,(Actino- 

 crinus asteriscus) Proc. Acad. Nat. Sci. 

 Phil., Burlington Gr. [Sig. little star.] 



calycuhides, see Eretmocrinus calycu- 

 loides. 



carica. Hall, 1861, (Actinocrinus carica) 

 Desc. New Crinoidea, Burlington Gr. 

 [Sig. a kind of dried fig.] 



cassedayanus. Meek & Worthen, 1868, 

 Proc. Acad. Nat. Sci. Phil., Burlington 

 Gr. [Ety. proper name.] 



christyi, Shumard, 1855, (Actinocrinus 

 christyi) Geo. Sur. jNIo., Burlington 

 Gi'. [Ety. proper name ] 



claviger, Hall, 1860, (Actinocrinus clavig- 

 erus) Supp. Geo. Sur. Iowa, Burlington 

 Gr. [Sifr. club-bearing.] 



clodia-, see Eretmocrinus cloelia. 



corbulis, Hall, 1861, (Actinocrinus cor- 

 buHs) Desc. New Crinoidea, Burling- 

 ton Gr. [Sig. a little basket.] 



discoideus. Hall, 1858, (Actinocrinus dis- 

 coideus) Geo. Rep. Iowa, Burlington 

 Gr. [Sig. quoit-shaped.] 



