18 HCHINODERMA. 
Family ANTEDONIDA. 
Les Astérencriniens libres, de Bl. Dict. Sct. Nat. Ix. (1830) p. 229. 
Pentacrinitide, Gray, Synop. B. M. (1842) p. 119; td. Brit. Rad. 
(1848) p. 28. 
Comatulide, d@’ Orbigny, Cours Elém. ii. (1852) p. 1388; Bronn, Klass. u. 
Ordn. ii. (1860) p. 233 ; Carpenter (sens. emend.), Chall. Rep. Comat. 
(1888) p. 63. 
Comatuliens, Daj. § Hup. Echin. (1862) p. 191. 
Antedonidee, Norman, Ann. § Mag. xv. (1865) p. 101. 
Crinoids free when adult, with the top joint of the larval stem 
persistent and cirriferous ; the basal plates of the calyx complete 
and external or vestigial and internal. Rays five or ten, simple or 
divided once or more. Mouth central, except in Actinometra. 
One genus: Antedon. 
Subbranch II. ELEUTHEROZOA. 
Eleutherozoa, Bell, Ann. § Mag. viii. (1891) p. 214. 
The Eleutherozoa are actinogonidiate caliculate Echinoderms in 
which the oral surface of the body looks downwards, the power 
of locomotion is retained, and the podia are often locomotor in 
function ; the anus, if present, varies in position. 
Division 1. AZYGOPODA. 
Azygopoda, zd. t. c. 
The Azygopoda are Eleutherozoa in which the podia are all or 
nearly all on the oral surface of the body only, and are separated 
by terminal plates from any contact with the calycinal area. 
Class IX. ASTEROIDEA. 
Asterias (pars), Zinn, Syst. Nat. x. (1758) p. 661 ; 2d. op. cit. xii. p. 1098. 
Asterias, Lamk. An. s. Vert. ii. (1816) p. 547. 
nde de Bl. Dict. Sci. Nat. \x. (1830) p. 216; Actinol. (1884) 
p. 255. 
Astéries, Agass. Mém. Soc. Neuch. (1836) p. 190; id. Ann. Set. Nat. vii. 
(1837) p. 284. 
Asterix, Lorbes, Mem. Wern. Soc. viii. (1889) p. 118; Diib. § Kor, Vet. 
Akad. Hdlg. 1844 (1846) p. 238. 
Asteriade, ed. Brit. Starf. (1840) pp. xiv & 71. 
Cirrhigrada, zd. 2b2d. 
Asteroida, Gray, Syn. Brit. Mus. 42nd ed. (1840) p. 61; id. Ann. § 
Mag. vi. (1840) p. 178. 
Asterida, M. Tr. Syst. Ast. (1842) p. 1. 
Lobistella, Austin, Ann. § Mag. x. (1842) p. 111. 
Asteriadxe, Bronn, Klass. u. Ordn. ii. (1860) p. 286. 
Asteridx, Sars, Norg. Ech. (1861) p. 25. 
