6 
BRITISH RADIATA. 
1. Spatangus purpureus. 
Spatangus purpureus, Muller, Prod. ii. 2850, ZooL Dan. t. 6 ; 
Leslie, Klein, 235. t. 43. figs. 3, 5, cop. E. M. t. 157. figs. 1, 4 ; 
Lamk. H. iii. 29, edit. 2. iii. 324 ; Flem. Brit. Anim. 489 ; 
Gray, Ann. Phil. x. 1825 ; Blainv. M. Act. 202. 1. 14. figs. 1, 
2,3; Forbes, Brit. Star/. 182. figs. 182, 186; Duben and 
Koren, Zool. Bidrag. 285. 47 ; Agassiz and Desor, Ann. Sc. 
Nat. IS47, 6; Blainv. Diet. Sc. Nat. lx. 184. 
a, b. Adult. Coast of England. 
c. Half-grown. Irish Sea. Presented by E. Forbes, Esq. 
2. Echinocardium. 
Ampbidetus, Agassiz, Ann. Nat. Hist. i. 301, 1838; Agassiz and 
Desor, Ann. Sc. Nat. 11, 1847. 
Ampbidotus, Forbes, Brit. Star/. 190. 
Ecbinocardium, Van Phelsum'l ; Gray, Ann. Phil. x. 1825. 
Spatangus a, Fleming, Brit. An. 480, 1829. 
Spatangus E, Blainv. Diet. Sc. Nat. lx. 185. 
1. Echinocardium cordatus. 
Echinus Spatangus, Merret, 192; Borlase, Cornw. 278. t. 28. 
fig. 28; Lister, App. t. 1. fig. 13. 
Echinus cordatus, Penn. Brit. Zool. iv. 69. t. 34. fig. 75. 
Spatangus cordatus, Flem. Brit. An. 480. 
Ampbidotus cordatus, Forbes, Brit. Starf. 190. fig. 
Ampbidetus cordatus, Agassiz-, Duben and Koren, Zool. Bidrag. 
285; Agassiz and Desor, Ann. Sc. Nat. 1847, 11. 
Spatangus pusillus, Leske ; Klein, 230. t. 24. fig. q, d, e. t. 38, 
5 {not Muller). 
Ecbinocardium pusillum. Gray, Ann. Phil. x. 1825. 
Ampbidetus pusillus, Agassiz. 
Echinus pusillus, Gmelin, S. N. 3193. 
Sp. lacunosus, Muller, Zool. Dan. i. 19, 20 (not Linn.). 
Sp. flavescens, Abildg. Zool. Dan. t. 91 (not Muller, Prod.) ; 
Oersd. Reg. Mar. 81. 
Sp. arcuarius, Lamk. H. iii. 31, edit. 2. iii. 328 ; Blainv. M. Act. 
201 ; Desmoid.', Gold. Pet. Germ. t. 48. fig. 1. 
Ampbidetus Goldfussii, Agassiz. 
a, b. Adult and young, with spines. Coast of England. 
Presented by Mrs. Mauger. 
c, d, e. Adult, without spines. Melton sands. G. Mon- 
tague, Esq. 
2. Echinocardium ovatum. 
Spatangus ovatus, Leske ; Klein, 252. t. 49. figs. 12, 1 3 ; Fleming, 
Brit. An. 480 ; Blainv. Zooph . ; Desmoul. ; Agassiz (not 
Lamk. nor Blainv.). 
