DIC] 



ECH1N0DERMA TA. 



239 



polydactylus, Shumard, 1857, (Honio- 

 crinus polydactylus,) Trans. St. Louis 

 Acad. Sci., vol. 1, p. 78, and Ohio Pal., 

 vol. 1, p. 22, Hud. Riv. Gr. 

 posticus, Hall, 1872, (Poteriocrinus posti- 

 cus,) 24th Rep. N. Y. St. Mus. Nat. 

 Hist., p. 209, and Ohio Pal., vol. 1, p. 

 22, Hud. Riv. Gr. 

 proboscidiatus, Billings, 1857, Rep. of 

 Progr. Can. Geo. Sur., p. 267, and Can. 

 Org. Rem., Decade 4, p. 38, Tren- 

 ton Gr. 



retractilis, Walcott, 1883, 35th Rep. N. Y. 

 St. Mus. Nat. Hist., p. 211, Tren- 

 ton Gr. 

 rusticus, Billings, 1857, Rep. of Prog. Geo. 

 Sur. Can., p. 270, and Can. Org. Rem., 

 Decade 4, p. 41, Trenton Gr. 



similis, Billings, 1857, Rep. of Progr. Geo. 

 Sur. Can., p. 267, and Can. Org. Rem., 

 Decade 4, p. 40, Trenton Gr. 



tener, Billings, 1866, Catal. Sil. Foss. 

 Antic, p. 9, Hud. Riv. Gr. 

 Dichocrinus, Munster, 1839, Beitrag. Zur. 

 Petref., vol. 1, p. 2. [Ety. dicha, in 

 two parts; krinon, lily.] Calyx deep, 

 cup-shaped ; plates delicate ; basals 2 ; 

 primary radials 5, large, resting two 

 upon each basal, and the other in a 

 notch at one end of the basal suture, 

 opposite which there is a large azygous 

 plate in line with the first radials ; suc- 

 ceeding radials 1 to 3, in each ray, the 

 last supporting arms ; arms 10, long, 

 bifurcating and bearing stout pinnules ; 

 interradials 4 or 5, small, situate 

 above the first radials ; vault slightly 

 elevated, with a small opening upon 

 the azygous side; column round. Type 

 D. radiatus. 



angustus, White, 1862, Proc. Bost. Soc. 

 Nat. Hist., vol. 9, p. 19, Burling- 

 ton Gr. 



chesterensis, see Pterotocrinus chesterensis. 



constrictus, Meek & Wdrthen, 1860, 

 Proc. Acad. Nat. Sci. Phil., p. 381, and 

 Geo. Sur. 111., vol. 2, p. 263, War- 

 saw Gr. 



conus, Meek & Worthen, 1860; Proc. 

 Acad. Nat. Sci. Phil., p. 381, and Geo. 

 Sur. 111., vol. 2, p. 169, Burlington Gr. 



cornigerus, see Talarocrinus cornigerus. 



coxanus, Worthen, 1882, Bull. No. 1, 111. 

 St. Mus. Nat. Hist., p. 35, and Geo. Sur. 

 111., vol. 7, p. 313, Keokuk Gr. 



crassitestus, White, 1862, Proc. Bost. Soc. 

 Nat. Hist., vol. 9, p. 19, Burlington Gr. 



crassus, see Pterotocrinus crassus. 



dichotomus, Hall, 1860, Supp. to Geo. 

 Sur. Iowa, p. 85, Warsaw Gr. 



clegans, Casseday & Lyon, see Talarocrinus 

 elegans. 



expansus, Meek & Worthen, 1868. The 

 name was preoccupied by DeKoninck 

 & LeHon, but the name is probably a 

 synonym for D. polydactylus. 



ficus, Casseday & Lyon, 1860, Proc. Am. 

 Acad. Arts and Sci., vol. 5, p. 24, and 

 Geo. Sur. 111., vol. 5, p. 502, Keokuk Gr. 



inornatus, Wachsmuth & Springer, (in 

 press,) Geo. Sur. 111., 

 vol. 8, p. 190, Waverly 

 or Kinderhook Gr. 

 hamiltonensis, Worthen, 

 1882, Bull. No. 1, 111. 

 St. Mus. Nat. Hist, p. 

 35, and Geo. Sur. 111., 

 vol. 7, p. 313, Keokuk 

 Gr. 

 lachrymosus, Hall, 1860, 

 Supp. to Geo. Sur. 

 Iowa, p. 84, Burlington 

 Gr. Wachsmuth says 

 it is a syn. for Platy- 

 crinus subspinulosus. 

 lsevis, Hall, 1860, Supp. 

 Geo. Sur. Iowa, p. 83, 

 Burlington Gr. 

 lineatus, Meek & Worth- FlG 2 85. — Dicho- 

 en, 1869, Proc. Acad./'Srinus inornatus. 

 Nat. Sci. Phil., p. 69, 

 and Geo. Sur. 111., vol. 5, p. 440, Burl- 

 ington Gr. 

 liratus, Hall, 1861, Desc. New Crinoidea, 

 p. 5, and Jour. Bost. Nat. Hist., vol. 7, 

 p. 290, Burlington Gr. 

 ornatus, Wachsmuth & Springer, 1881, 

 Proc. Acad. Nat. Sci. Phil, and Revis. 

 Paheocrin., p. 84, Keokuk. Gr. This 

 name was proposed instead of D. sculp - 

 tus, Casseday & Lyon, because the latter 

 was preoccupied, 

 ovatus, Owen & Shumard, 1850, Jour. 

 Acad. Nat. Sci., 2d ser., vol. 2, p. 61, 

 and Geo. Sur. Iowa, Wis., and Minn., p. 

 590, Burlington Gr. 

 pisum, Meek & Worthen, 1869, Proc. 

 Acad. Nat. Sci. Phil., p. 69, and Geo. 

 Sur. Ill,, vol. 5, p. 441, Burlington Gr. 

 plicatus, Hall, 1861, Desc. New Crinoidea, 

 p. 4, and Jour. Bost. Soc. Nat. Hist., 

 vol. 7, p. 288, Burlington Gr. 

 pocillum, Hall, 1861, Desc. New Crinoidea, 

 p. 5, and Jour. Bost. Soc. Nat. Hist., 

 vol. 7, p. 291, Burlington Gr. 

 polydactylus, Casseday & Lyon, 1860, 

 Proc. Am. Acad. Arts and Sci., vol. 5, 

 p. 20, Keokuk Gr. 

 protuberans, Hall, see Pterotocrinus pro- 



tuberans. 

 scitulus, Hall, 1861, Desc. New Crinoidea, 

 p. 4, and Jour. Bost. Soc. Nat. Hist., 

 vol. 7, p. 289, Burlington Gr. 

 sculptus, Casseday & Lyon, 1860, Proc. 

 Am. Acad. Arts and Sci., vol. 5, p. 25. 

 The name was preoccupied by DeKo- 

 ninck & LeHon in 1853. See D. or- 

 natus. 

 sexlobatus, see Talarocrinus sexlobatus. 

 simplex, Shumard, 1857, Trans. St. Louis 

 Acad. Sci., p. 74, and Geo. Sur. Iowa, 

 p. 654, Warsaw Gr. 

 striatus, Owen & Shumard, 1850, Jour. 

 Acad. Nat. Sci., 2d ser., vol. 2, and Geo. 

 Sur. Iowa, Wis., and Minn., p. 590, 

 Burlington Gr. 

 gymmetricus, see Talarocrinus symmet- 

 ricus. 



