636 LINDSTRÖM, ON THE »CORALLIA BALTICA» OF LINN^US. 



P. 30, N:o XIII. Millepora subrotunda, poWs minimis 

 confertis, majoribusque crenatis, remotis. Fig. XXIV. 



1749 » » Am. Acad. I, p. 99. 



1767 Madrepora interstincta S. N. ed. XII, 1276. 



The figure differs a little from the description, as it shows 

 a fragment with nearly even surface, such as may often be found 

 near Wisby. Schreber in his edition of Amoen. Acad. I, p. 

 99, does not adopt the »nomen triviale» interstinctus, as he else- 

 where has done with most of the other species, which had received 

 such naraes in Systema Naturae. He did not, consequently, 

 consider the fossil identical with that species in S. N., no doubt 

 because there is no reference to Corallia Baltica such as we 

 commonly find in the writings of LiNN^üS. That he, nevertheless, 

 meant the same species, is evident from his own remarks written 

 in a copy of Systema Nat., 12th edition, now in the Linnean 

 Society's library. We find there after M. interstincta »Araoenit. 

 Acad., I, 44, fig. 21», and, in a second copy of the same book, 

 is written in the same place »Amoen. Acad. I, 64, fig. 21». It 

 is manifest that he had forgotten to insert it and now would 

 supply the omission. When we turn to the two discordant re- 

 ferences in all the editions he could examine of Araoen. Acad., 

 we find that both references are wrong and that he had written 

 thera without Consulting the book. No edition of Am. Ac. has 

 the Corallia baltica at page 44 or 64, and the fig. 21 represents 

 Favosites Hisingeri Edw. H., while the description of Madr. 

 interstincta is found on page 99 in the first and on p. 201 in 

 the second edition and the figure is numbered xxiv. Errors in 

 references were in LlNN^us' times of no rare occurrence, as every 

 one, who has consulted works from oiden times w^ell knows. The 

 main point is that LiNN^us himself regarded his Madr. inter- 

 stincta as a Gotland coral and that his description cannot he 

 applied to any other than just this fossil. It may even be that 

 he in Syst. Naturse had other forms of Heliolithidse in view and 

 he adds there the important words, »stellce . . . ftmdo radiato», 

 or the septa are elongated within the calicle and cover its bottom. 



