LIST OF BRITISH RADIATA. 
Subkingdom IV. CENTRONICS. 
Centronix, Gray, Syn. Brit. Mus. 1841, 131 ; 1842 ; Austen, 
Ann. and Mag. N. H. x. 106, 1842. 
Vermes zoophyta, V. lithophyta and V. mollusea pars, Linn. S.N. 
Animaux apathiques, part., Lam. Ext. du Cour, 1812. 
Les Zoophytes ou Animaux Rayonnes, Cuv. Reg. Anim. 1817- 
Actinozoaires (Actinozoa), Blainv. Diet. Sci. Nat. 1830. 
Acephala.Actinozoaet Phytodozoa, Latr. Fam. Reg. Anim. 1825. 
Les Zoophytes, Cuv. Tab. Elem. 640, 1708. 
Phytozoa and Cyclozoa, Eichw. Zool. Spec. 1829. 
Radiaires and Polypes, Lamk. Syst. 341, 367- 
Radiata, Flem. Brit. Anim. 472; Phil. Zool. 
Sect. 1. ECIIINODERMATA. 
Centronia, Pallas, Misc. Zool. (73, 74) 153, 1766. 
Echinodermes, Cuvier, Tab. Elem. 643, 1798; R. Anim. 1817 ; 
Latr. Fam. R. Anim. 1825. 
Radiaires echinodermes, Lamk. Syst. 343, 1801 ; Ext. du Cour, 
1812. 
Cirrhodermaires, Blainv. Diet. Sci. NatAx. 1830. 
Cyclozoa echinoderma, Eichw. Zool. Spec. 222, 1829. 
Echinodermata, Flem. Brit. Anim. 472, 473 ; Gray, Syn. Brit. 
Mus. 1840. 
Class I. DITREMATA. 
Ditremata, Gray, Syn. B. Mus. 1840. 
Echinus and Holothuria, Linn.-, Cuvier. 
Echinides, Lamk. Syst. 348, 1801. 
A 
