1885.] NATURAL SCIENCES OF PHILADELPHIA. 349 



rangular plates, with strong, apparently immovable pinnules, lat- 

 erally connected. The arms are so closely folded together that 

 they appear as if they were suturally connected, and formed 

 around the calyx a solid body with ten ambulacra upon the surface. 



Column stout, circular, with pentangular axial canal. 



The only known species is : 



1S78. Barrandeocrinus sceptrum Angl. Icono. Crin. Suec. p. S, PI. 4, fig-, j, 5 a, 

 and PI. 5, figs. 6, 6a, and PI. 22, figs. 2-4. — Upper Silur. Gothland, Sweden. 



Family X.— CALYPTOCRINIDJE Roemer. 



Roemer, in proposing this family, used the name Eucalyptocri- 

 nidas (Leth. Geogn., Aug. 3, 1855, p. 229), which was afterwards 

 changed b}' Angelin to Calyptocrinidae (Icon. Crin. Suec, 1879, 

 p. 14). The latter name was accepted by Zittel, who referred to 

 it also Lyriocrinus Hall, which we have placed under the Rho- 

 docrinidre. 



ETJCALYPTOCRINUS Goldfuss. 



(HYPANTHOCRINUS Phillips.) 



1826. Goldfuss. Petref. Germ., i, p. 212. 



1835. Agnssiz. Mem. Soc. des Sci. natur. de Neucbatel, i, p. 197. 



18o8. Goldfuss. Nova Acta. Leopold., xix, i, p. 335. 



1841. Midler. Eerl. Acad. d. Wissensch., p. 210. 



1841. Hall. Paleont. -N. York, ii, p. 207. 



1843. Roemer. Rbein. Nebergangsgeb., p. 04. 



1850. D'Oibgny. Piodr. de Paleont., i, p. 45. 



1852. Quenstedt. Handb. der. Petrefacteuk., p. 624. 



1854. McCoy (in part). Synops. Brit. Palasoz. Fossils, p. 57. 



1855. F. Roemer. Letbaea Geogn. (Ausg. 3 , p. 257. 

 1857. Pxtet. Traite de Paleont., iv, p. 3U7. 



1860. Bionn. Klassen des Thierreicbs (Actinozoa), PI. 27. 



1862. Hall. Notice. of New Foss. from YVald.on, p. 3. 



1862. Dujardin and Dui e. Hist, natur. des Zoopb. Ecbin., p. 115. 



1865. Hall. 15th Rep. N. Y. State Cab. Nat. Hist. p. 32. 



1866. Scbultze. Monogr. Ecbin. Eifl. Kalk., p. 90. 



1878. Angelin. Iconogr. Crinoid. Suec, p. 16. 



1879. Hall. 28tb Rep. N. Y. State Cab. Nat. Hist. (edit, ii), Pis. 16-19. 

 1879. Wetberby. Journ. Cincin. Soc. Nat. Hist. (April), No. 5. 



1879. Zittel. Handb. der Paleont., i, p. 379. 



1882. S. A. Miller. Journ. Cincin. Soc. Nat. Hist. (July). 



(?) Syn. Hypanthocrinus Pbill., 1839; Murcbi.-on's Silur. System, 

 p. 672, PI. 17, fig. 3 ; Zittel, 1879 ; Angelin, 1878 ; S. A. Miller, 1880. 



