226 



ECHINODERMA TA. 



[AST. BAR. 



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

 123. Low. Held. Gr. 



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

 p. 123, Low. Held. Gr. 



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



3, p. 122, Low. Held. Gr. 

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

 sans Vert. Not Palaeozoic. 



anthonyi, see Palseaster jamesi. 



antiqna, see Palseaster antiqua. 



antiqnata, see Palseaster antiquata. 



matutina, see Palseaster matutina. 

 Asterocrinus, Lyon, 1857, Geo. Sur. Ky., 

 vol. 3. This name was preoccupied by 

 Munster. See Pterotocrinus. 



capitalis, see Pterotocrinus capitalis. 



coronarius, see Pterotocrinus coronarius. 

 Astrios, Troost, 1850, Catalogue. Not de- 

 nned. 



tenneweie, Troost, 1850. Not defined. 



FIG. 251. Baryerinus wachsmathl. Diagram. 



Aatrocrinites, Conrad in Catalogue Ann. Geo. 

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

 posed, but not defined ; moreover it was 

 preoccupied. 



pachydactylm, see Mariacrinus pachydac- 



tylus. 



Astylocrinus, Roemer, 1854, Leth. Geo., p. 

 229, syn. for Agassizocrinus. 



lams, syn. for Agassizocrinus dactyli- 

 foftnis. 



Ataxocrimis, Lyon, 1869, syn. for Ano- 

 malocrinus. 



capontformit, see Anomalocrinus caponi- 



formis. 



Ateleocystites, Billings, 1858, Can. Org. Rem., 

 Decade 3, p. 72, syn. for Anomalocys- 

 tites. 



huxleyi, see Anomalocystites huxleyi. 

 ATELKSTOCRINUS, Wachsmuth & Springer, 

 1886, Rev. Pal., pt. 3, p. 221. [Ety. 

 attlestos, incomplete ; krinon, lily.] Calyx 

 elongate, bell-shaped, sides concave, 

 restricted along the suture between 



basals and subradials ; basals 5 ; sub- 

 radials 5; long, narrow, irregular; 3 

 hexagonal, 2 heptagonal ; azygous 

 radial, non-arm bearing, the other four 

 supporting each from 2 to 5 brachials ; 

 the eight arms give off branching arm- 

 lets; azygous plate large, resting upon 

 two subradials; column pentangular. 

 Type A. delicatus. 



delicatus, Wachsmuth & Springer, 1886, 



Rev. Pal., pt. 3, p. 223, Burlington Gr. 



robustus, Wachsmuth & Springer, 1886, 



Rev. Pal., pt. 3, p. 223, Burlington or 



base of Keokuk Gr. 



Balanocrinus, Troost, 1850. This name was 



preoccupied. See Lampterocrinus. 

 inflatus, see Lampterocrinus inflatus. 

 BARYCRINUS, Wachsmuth, 1868, Proc. Acad. 

 Nat. Sci., p. 338. [Ety. barm, heavy; 

 krinon, lily.] Distinguished from 

 Cyathocrinus by be- 

 ing more robust, 

 having thicker 

 plates, and a shal- 

 lower cup ; there 

 are usually two azy- 

 gous plates, while in 

 Cyathocrinus there 

 is never more than 

 one; there are never 



^__^ more than two 



j brachials, and these 



are shorter and wider 

 than in Cyathocri- 

 nus; the arms are 

 shorter, heavier, and 

 have narrower 

 grooves; the column 

 is stouter; subpen- 

 tagonal and longi- 

 tudinally five partite, 

 with a highly or- 

 ganized central ca- 

 nal. Type B. an- 

 gulatus. 



angulatus, Meek & 

 Worthen, 1860, (Cyathocrinus angu- 

 latus,) Proc. Acad. Nat. Sci. Phil., p. 

 391, and Geo. Sur. 111., vol. 2, p. 234, 

 Keokuk Gr. 



bullatus, Hall, 1858, (Cyathocrinus bul- 

 latus,) Geo. Sur. Iowa, p. 624, Ke- 

 okuk Gr. 



cornutus, Owen & Shumard, 1850, (Cy- 

 athocrinus cornutus,) Jour. Acad. Nat. 

 Sci., 2d ser., vol. 2, p. 63, and Geo. Sur. 

 Wis., Iowa, and Minn., p. 591, Burling- 

 ton Gr. 



crassibrachiatus, Hall, 1860, (Cyathocrinus 

 crassibrachiatus,) Sup. to Geo. Sur. 



Iowa, p. 60, Keokuk Gr. 

 geometricus, Meek & Worthen, 1873, Geo. 



Sur. 111., vol. 5, p. 485, Keokuk Gr. 

 herculeus, Meek & Worthen, 1868, Proc. 

 Acad. Nat. Sci. Phil., p. 341, and Geo. 

 Sur. 111., vol. 5, p. 485, Keokuk Gr. 

 hoveyi, Hall, 1861, (Cyathocrinus hoveyi,) 

 Desc. New Grin., p. 5, and Geo. Sur. 

 111., vol. 5, p. 486, Keokuk Gr. 



