50 CHRONOLOGICAL LIST. 



1846. L. ACASSIZ ET Desor (continued). 



Echinus 

 Psammecliinus 



excaratus ! 

 Echinus 



laganoides Des. = Eckinometra setosa Rumpel 1705. 

 Heliocidaris Desml. 



variolaris ! Desml. 



paucituberculata ! Desml. 



chlorotica ! Desml. 



margaritacea ! 



eurythrogramma ! Des. 



omalostomu ! Des. 



mexicana ! Ag. = Echinus lucunter Lin. 1758. 

 Eckinometra 



heteropora! Ag. = Echinus lucunter (Lam) 1816. 



Michelini! Des. = Echinus lucunter Lin. 1758. 

 Acrocladia 



trigonaria ! Ac. 



hastifera! Ag. = Cidaris mammillata Klein, 1734. 



Blainvillei ! Ag. = " " •• " 



Podophora 



pedifera ! Ag. 



1847. 



L. Auassiz, in Desok, Bull. Soc. GioL Prance. IV. 1847, p. 287. 

 Monophora 



1847. 



DrcnAssAiNG, Bull. Soc. Gdol. France, 1817, June.1? 

 Clypeasler 



parvus = Echinus rosaceus Lin. 1758. 

 Cassidulus 



guadeloupensis = Cassidulus caribaoatum Lam. 1801. 



1847. 



L. Agassi/, i t Di sor, Cat Rais. Ann. Sc. Nat. 1847, p. 0, March. 

 Lagunum 



attenuatum ! An. = Laganum depressum Less. 1841. 

 cingulatum ! Ag. = " " " " 



latissimum ! 

 Dendraster Ag. 



excentricus ! Ag. 



Lobopliiirii 



tenuissima: Val. = Mellita laevis Klein. 1734. 

 Mellita 



nuramularia ! Val. = Echinodiscus emarginatus Leske, 1778. 

 Mbvlinsia (err. typ.) Moulinia Agass. 1841 ; non Geatel. 1840. 

 Echinocyamus 



australis ! Ag. 

 Fibularia 



volva ! Ag. 

 Lenita Des. 



