62 CHRONOLOGICAL LIST. 



1848. 



Ravenkl, Ecb. So. Car. 1848, January. 

 Clypeaster 



prostratus = EcMnanihw subdepressus Gray, 1825. 

 Mellita 



ampla ! Holmes = Mellita testudinata Klein, 1734. 



caroliniana. 

 Brissopsis 



porifenis. 

 Amphidetus 



gothicus = Echinus cordatus Penn. 1777. 



1849. 



Forbes, Q. J. Geol. Soc. London, I. 1849, p. 425. 

 Amphidetus 



virginianus = ? Echinocardium pennatifidum Norm. 1867. 



1850. 



Girard, Proc. Bost. Soc. N. II. 1850, p. 364, November. 

 Heliechinus 



Grouldii! = Cidaris escuknta (Leske) 1778. 

 Melobosis 



mirabilis! = Salmacis sulcatus Ac 1846. 

 Psammechinus 



asteroides! = Echinus chloroticus Val. 1846. 

 Echinomelra 



nigrina! = Echinus lucunter Lixx. 1758. 

 Echinoeyamm 



minimus! = Spatagus pusillus Mill. 1776. 

 Schizaster 



lachesis ! = Spatangus atropos Lam. 1816. 



1850. 



Forbes, Ang. Mag, N. II. VI. 1850, p. 443, December. 

 Car di aster. 



