BIHANG TILL K. SV. VET.-AKAD. HANDL. BaND 13. AFD. IV. N:0 5. 163 



1758. Echinus Spatagus L. 1767. S. X. ed. 12, p. 1104. 



» » » 1778. Leske, Add. p. 246. 



1778. Brissus maculosus Leske, Add. p. 247. 



» » » 1866. Y. Mårtens, Wiegm. 



Arch., XXXII, p. 181. 

 Metalia >. » 1872. Al. Ag. Rev., p. 144, 



598. t. XXlb, f. 8, 9. 

 » » » 1883. ]>E LoRiOL, Mém. Ge- 



neve, XXVIII, Xo 8, 

 p. 46. 

 1778. Brissus unicolor Leske, Add. p. 248. 



Spatangus » » 1830. Blainv. Diet. Se. Xat., 



LX, p. 184. 

 » y> 1834. Id. Man. d'Act. p. 203. 



» >. » 1837. Desmoul. Et., p. 382. 



1816. SpataDgus ovatus Lamck., Hist. an. s. v., III, p. 30. 



» » 1827. Blainv., Diet., L. p. 89. 



In the Lecture of 1752 Linn^us referred in the first place 

 to Gualtieri and Rumphius, both of which give figiires of 

 the Metalia maculosa Leske, and, next, to Sloane who iigures 

 small specimens of the Brissus columbaris Lamck.; to these 

 in the S. X. of 1767 was added the woodcut in Imperati, of the 

 Brissus Scillse Agass. The rest of the references belong to 

 the Sehizaster canaliferus Lamck., and the Echinocardiuni cor- 

 datum Penn., and will be considered under the next species. 



We may be pennitted to conjocture that when Linn.eus 

 in September 1754 saw the three West Indian Echinoids that 

 had been lately added to the collection, he at once recognised 

 as new and described the two: the E. lucunter from compa- 

 rison with the E. mamillatus, and the E. reticulatus from 

 comparison with the E. rosaceus, bi;t found himself unable to 

 deeide about the third, now our Brissus columbaris, becausc 

 the original of his E. lacunosus, a fragile species, was alrcady 

 löst and could not be compared. It cannot be woudcred at 

 that SwARTZ, who found it missing in 1790, did not know 

 what to do with the two specimens of the Brissus columbaris, 

 whose characters were not those of either of the two Spatan- 

 gidse in the M. L. U. And thvis it happened that the one 

 of them, which is almost completely denuded and answers to 

 the words in Thunberg's list: »E. Spatagus . . . without spi- 



