224 



ECHINODERMA TA. 



| \\<>. AKC 



and supposed to possess a tube or pro- 

 boscis ; column large and longitudinally 

 from 5 to 20 partite. Type A. in- 

 curvus. 

 caponiformis, Lyon, 1869, (Ataxocrinus 

 caponiformis,) Trans. Am. Phil. Soc, 

 vol. 13, p. 464, and Jour. Cin. Soc. Nat. 

 Hist., vol. 2, p. 109, Hud. Riv. Or. 



\ 



•o 



/ 



? 



39- 



Fig. 247.— Anomalocystites balanoldes. 

 Convex and flattened sides. 



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



3d ser., vol. 3, p. 423, and Ohio Pal., 



vol. 1, p. 41, Hud. Riv. Gr. 

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



p. 133,»Low. Held. Gr. 

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



p. 145, Oriskany sandstone, 

 huxleyi, Billings, 1858, (Ateleocystites 



huxleyi,) Can. Org. Rem., Decade 3, p. 



72, Trenton Gr. 



O 



. 4 * 



Kig. 2W.— Anomaloc-rinu.H inourvus. DtagfMi 



incurvus, Meek & Worthen, 1865, (Hetero- 

 crinus incurvus,) Proc. Acad. Nat. Sci. 

 Phil., p. 148, and Geo. Sur. 111., vol. 3, 

 p. 327, Hud. Riv. Gr. 

 Anomamk ystites, Hall, 1859, Pal. N. Y. 

 vol. 3, p. 132. [Ety. anomak*, irregular; 

 faotu, bladder.] Somewhat semiellip- 

 tical, sides unequal, vertical outline oval 

 or ovoid; first series of plates 3 on the 

 convex and 2 on the fiat or concave 

 side; second series 4 or 5 on the convex 

 side and 2 on the concave side ; third 

 series 4 on the convex and 1 on the 

 other; succeeding series have smaller 

 plates and the apex is unknown; 

 column large at the body and very 

 rapidly tapering; no pores or pecti- 

 nated rhombs. Type A. cornutus. Wet b- 

 erby supposed this to be a Crustacean 

 and gave it the name of Enoploura. 



Anomaloide*, Ulrich, 1878, Jour. Cin. Soc 

 Nat. Hist., vol. 1, p. 92. A word oon- 

 structed of adjectives making it mean- 

 ingless, contrary to the ruhs of nomen- 

 clature, and the attempt to found a 

 genus was made on a fossil fragment 

 not understood. 



reticulata*, Ulrich, 1878, Jour. (in. 

 Nat. Hist, vol. 1, p. 92, Hud. Riv. Or. 

 A fossil fragment not understood. 

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

 Great Brit., vol. 2, p. 502. [Ety. avion, 

 pear; kuttix, bladder.] Body ovoid, or 

 oblong oval, angular and covered by 

 four series of plates; first series has 4 

 plates: second series 5; third series r> 

 or 6; fourth series ."> or more; arms 4, 

 recumbent and filling shallow grooves 

 at the angles of the body, column rap- 

 idly tapering; ovarian aperture near 

 the summit, on the anterior side; all 

 •the plates bearing calycine pores; a 

 pectinated rhomb upon each side in 

 the 3d and 4th series, and one on the 

 anterior side in the 2d series, but these 

 may be variable. Type A. pentremit- 

 oides. 



canadensis, Billings, 1866, Catal. sil. I 

 Antic, p. 90, Niagara Gr. 



elegans. Hall, 1862, Pal. N. Y., vol. 2, p. 

 243, Niagara < > r. 



huronensis, Billings, 1866, Catal. Sil. 

 Foes. Antic, p. 91, Niagara Cr. 



imago, Hall, 1867, 20th Rep. N. V. St. 

 Mus. Nat. Hist., p. 358, Niagara Cr. 



tecumseth, Billings, 1868, Catal. Sil. I 

 Antic, p. 91, Niagara < Jr. 

 \ RA< IHHOOBIin s, Meek A Worthen, 1866, 

 Geo. Sur. 111., vol. 2, p. 177. [Ety. 

 arachne, spider; ibrttum, lily.] Calyx 

 small, resembling Cyathoerinus, but 

 more depressed; basals 5; sulnadials 

 ■"> ; radials 3x6; arms long, robust, 

 spreading, furrow deep; no pinnules; 

 a/.ygous plate supporting a lateral tube ; 

 column round. Type A. bulbosus. 



bulbosuH, Hall. 1860, (Cvatbocrinus bulb- 

 osus,) 15th Rep. \. V. St. .Mns. Nat. 

 Hist., p. 123, Up. Held. Gr. 



extensus, Waebsmuth <v. Springer, 1879, 

 Revis. Palnocrinoidea, p. '•»:!, Ham. Gr. 



knappi, Wachsmuth & Springer, 1879, 

 Revis. Paheocrinoidea, p. !>:>, Ham. Cr. 



pisiformis, Roemer, 1860, 

 (Poteriocrinus pisifor- 

 mis,) Sil. Fauna W. rj^ 

 Tenn., p. 54, Niagara (ir. \£& 

 Wachsmuth says it is a ,, 1( , , |S 

 Lecanocrinus. Arachnocrinas 



ARCH 1 ■.<»< I DA RI8, McCoy, pisiformis. 



1844, Carb. Foss. Ireland, 

 p. \7'.i. [Ety. iirchaiox, ancient ; ddarii, 

 turban.] Spherical; ambulacra narrow, 

 each composed of two ranges of plates, 

 with two pores in each plate ; interam- 

 bulacral plates large, thin, eacb with a 

 large, perforated, central tubercle, sur- 

 rounded, at its base, by a smooth ring, 

 and rounded, at the base, for the artic- 



