iMl' 



GEOGRAPHICAL DISTRIBUTION OF THE GENERA. 



Amblypneustes, 



Arachnoides, 



astriclypeus, 



a-ikopyoa, 



( 'ih IBIS, 



Clypeaster, 



coelopleurus, 



DlADEMA, 



PLATE C 



ECHINAXTHUS, 



ECHINOBEISSUS, 



ECHINOLAMPAS, 



El lll.NOMETRA, 

 Iv II I M s, 

 El I'ATAGUS, 



Faobina, 



holopneustes, 



LlNTHIA, 



Mespilia, 



MoiBA,* 



NeOI.AMI'AS, 

 Ni CLEOLITES, 



Paleostoma, 



Peronella, 

 Trigonocidaris. 



Breynia, 

 Centbostephai 



colobocentrotus, 



hoUlll'IlPAIUS. 

 El 111 N LB \i ll\l: 



ECHINOOY Wll 8, 



Echixodiscus, 



EcHINONEUS, 



PLATE D. 



EOHINOSTBEPHUS, 



Fllil I, ARIA, 



Hill Hoi l.MUMTUS, 



Lag lndm, 



M LRETEA, 



Mn ROCYPHUS, 



Pabasalenia, 



PlIYI.I MAN IIIUS, 

 PSEl DOBOLETIA, 



Rotii \. 

 Salmai IS, 



Stomopneustes, 

 Strom. s loi entbotus, 



Ti;mmipi.eurus. 



Agassizia, 

 asthenosom \, 

 Brissus, 

 Encope, 



GoNIOCIDABIS, 



Hemiaster, 



PLATE E. 



HlPPOMU, 



EOHOLAICPAS, 



LOVENIA, 



Mki.i.ita, 

 Mi OMA, 



POURTALESI \, 

 lillY.Vt IIOI'YGUS, 

 Tk.M.M i II IM 3, 



toxopneubtes, 



Tripylus. 



Arbacia, 



Brissofsis, 



PLATE F. 



EclllXOCARDU'M, 

 SCUIZASTER, 



SPATANGUS. 



* Spelled on map Moera. 



