CHRONOLOGICAL LIST. Gl 



1847. L. Agassiz et Desor (continued). 



Echinoneus 



crassus! Ag. = Echinoneus cyclostomus Leske, 1778. 



ventricosus ! Ag. = " " " " 



Pygaulus Ag. 

 Archiacia Ag. 

 Asterostoma Ag 

 Spatangus 



spinosissimus !? Des. = Spatagus purpureus Mill. 1776. 

 Macropneustes Ag. 

 Eupatagus Ag. 



Valenciennesii ! Ag. 

 Gualteria Des. 

 Lovenia Des. 



hystrix Des. = Spatangus elongatus Gray, 1845. 

 Amphidetus 



cordatus ! Ag. 



gibbosus ! Ag. = Amphidetus mediterraneus Forbes, 1844. 



ovatus ! Ag. 

 Breynia Des. 



Crux Andreae ! Ag. 

 Brissus 



Plagionotus (Agass.) nnn Muls. 1842. 



pectoralis ! 

 Brissus 



ventricosus ! 



bicinctus! Val. = Spatangus sternalis Lam. 1816. 



dimidiatus! Ag. = Brissus unicolor Klein, 1734. 



areolatus ! Val. = Spatangus sternalis Lam. 1816. 

 Brissopsis 



lyrifera ! 



cavernosa ! 



australis ! 

 Hemiaster Des. 

 Fericosmus Ag. 

 Agassizia 



excarata ! Des. 

 Schizaster 



canaliferus ! Ag. 



fragilis ! Ag. 



gibberulus ! Ag. 



cubensis! d'orb. = Spatangus ventricosus Lam. 1816. 

 Echinolampas 



Laurillardil (Desml.) 1847, non Desmt. = Echinolampas Hellei Val.; Per. 1869. 



1847. 



Troschel in Martens, Wieg. Arch. 1866, I. p. 158.* 



Diploporus 



pyramidatus ! = Salman's sulcatus Ag. 1846. 



* Read, Ber. dor Cos. f. Nat. II. Freunde, Berlin, 184 7. 



