2 CRINOIDEA. 
CRINOIDEA (see p. 17). 
ANTEDON. 
Antedon, de Fréminville, Nouv. Bull. Soc. Philom. ii, (1811) p. 349; 
Norman, Ann. § Mag. xv. (1865) p. 101; P. H. Carpenter, Chall. 
Rep. Comat. (1888) p. 85. 
Asterias, Linn. Syst. Nat. x. (1758) p. 661; op. cit. xii. (1766) p. 1098 
(pars). 
Soeatiee Schlotheim, Taschenbuch f. d. Mineralogie, vii. 1. (1813) 
. 68. 
Alecto: Leach, Zool. Mise. ii. (1815) p. 61; Say (Alectro), J. Acad. 
Nat. Sci. Philad. v. (1825) p. 153; J. Miill. Ber. Ak. Berl. 1841, 
p. 182; id. Abh. Ak. Berlin, 1841 (1845), p. 203; ad. (pars), Abh. 
Ak. Berl. 1847 (1849), p. 238. 
Comatula, Lamk. An. s. Vert. ii. (1816) p. 5380; Miller, Nat, Hist. 
Crin. (1821) p. 128; de Bl. Dict. Sct. Nat. Ix. (1830) p. 229; Ag. 
Mém. Soc. Neuch. i. (1856) p. 198. 
Comatulithes, Schlotheim, Petrefactenkunde, 1829, ii. p. 47. 
Pentacrinus, V. Thompson, Mem. on Pentac. europzeus, (1827) p. 10 ; 
Fleming, Brit. An. (1828) p. 495. 
Hibernula, Fleming, op. cit. p. 494. 
Phytoerinus, de Bl. Dict. Sct. Nat. \x. (1880) p. 235. 
Glenotremites, Goldfuss, Petref. Germ. 1. (1832) p, 159. 
Solanocrinites, zd. op. cit. p. 166. 
Ganymeda, Gray, Proc. Zool. Soc. 1884, p. 15; wd. Brit. Rad, (1848) 
. 28. 
Pee roeania! Ag. Mém. Soc. Neuch. i. (1836) p. 195. 
Solacrinus, 7d. op. cit. p. 196. 
Decacnemos, Bronn, Leth. Geognos, 2nd ed. (1837) p. 273. 
Hertha, Hagenow, Neues Jahrb. 1840, p. 664. 
Comaturella, von Miinster, Beitr. z. Petrefact. (1848) p. 97. 
Solanocrinus, Bronn, Ind. Pal. (1848) p. 1150. 
Decameros, @’ Orbigny, Prod. Pal. ii. (1850) p. 121. 
Decacnemus, Bronn, Leth. Geognos. 5rd ed. (1851) ii. Th. iv. p. 188. 
Pterocoma, d’Orbigny, Cours Elément. ii. (1852) p. 159. 
Comatulina, zd. zbed. 
Allionia, Michelotti, Rev. et Mag. Zool. xiii. (1861) p. 353. 
Hyponome, Lovén, Forh. Skand. Naturf. x. (1869) p. liv. 
Kallispongia, Wright, Proc. R. Irish Acad. ii. (1877) p. 754. 
Geocoma, Fraas, Aus dem Orient, ii. (1878) p. 214. 
An Antedonid with five rays and central or subcentral mouth ; 
oral pinnules devoid of comb, but all the pinnules with sacculi. 
Rays divided once or more, with the ambulacral grooves equally 
well developed on all the arms, which are of equal length. Centro- 
dorsal generally hemispherical and conical; cirri twenty or more 
in number. . 
