2 BRITISH RADIATA. 
Order I. ECHINIDA. 
Echinus, hinn. 
Centronise, Hill, Hist. Anim. 196, 1752. 
Les Echinides, Lam. Ext. du Co^^r, 1812; Blainv. Diet. Sci. 
Nat. lx. 178 (1830); Desmoulin, Act. Soc. Linn. Bord. vii. 
1835. 
Les Oursins, Cuvier, Tab. Elem,. 647, 1798; Reg. Anim. 1817* 
Les Echindides (Ecliinoida), Latr. Earn. R. A. 1825. 
Echini, Eichw. Zool. Spec. 228, 1829. 
Echinida, Macleay, Horce Ent. ii. 1 16 ; Gray, Ann. Philos, x. 1825. 
Echinidse, Flem. Brit. Anim. 473, 474. 
CiiTi-Spinigrada, E. Forbes, Brit. Starf. 15, 1841. 
Adelostella, Austen, Ann. and Mag. N. H. x. Ill, 1842. 
Earn. 1. CiDARiDiE. 
Cidaris, Flem. B. A. 477- 
Cidaridae, Gray, Ann. Phil. x. 1825 ; Syn.B.M. 1840; 1B42, 115. 
Cidarites, Agassiz, Prod. Ann. Nat. Hist. i. 305. 
1. Cidaris. 
Cidaris, Klein ; Flem. B. 477 ; Gray, Ann. Phil. x. 1825. 
Cidarites, Lamk. 1816 ; Blainv. Diet. Sci. Nat. lx. 214 ; Agassiz, 
Prod. Ann. Nat. Hist. i. 305. 
1. Cidaris papillata. 
Echinus cidaris, Linn. F. Suec. 513; Nilsson, Z. Scand. 11. 
E. cidaris? var. a. Sow. Brit. Misc. t. 44. 
Cidaris papillata, Leske ; Klein, Echid. 125. t. 7- & t. 39. f. 2 ; 
Fleming, Brit. Anim. 477 ; Forbes, Brit. Starf. 146, fig. bad; 
Desmoul . ; Duben and Koren, K. Vet. Akad. Hand. 1844, 255. 
t. 9. f. 25-30, life. 
C. Hystrix, Sars, Besk. 40; not Lamk. 
C. boreahs, Duben and Koren, Ofr. K. Vet. Akad. Forh. 1844, 
114. 
Piper, Zetlanders. 
Inhab. North Sea. 
Earn. 2. Echinida. 
Echinus, Lamk. 1801, 1816. 
Echinus, sp. Linn. &c. 
Cidantes part., Agassiz, Prod. Ann. Nat. Hist. i. 304. 
Echinidae, Gray, Ann. Phil. x. 1825; Synop. Brit. Mus. 1842, 
115; Austen, Ann. and Mag. N. H. x. 111. 1842. 
