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



1788 Tubipora stellata Modéer, Om slägtet Pipraask, Vet. 



Ak. Handl. p. 230, Taf. VIII f. 1, 



1793 Madrepora Organum Gmelin S. N. ed. 13, p. 3763, but 



confounded with the recent Tubi- 

 pora musica. 

 1819 Madreporites organon Wahlenberg p. 97. 

 Syringophyllum Organum of M. Edwards & Haime and of 

 subsequent authors. For a complete list of synonyms see Angelin 

 Fragmenta Silurica p. 35. 



P. 26j N:o VII. Madrepora composita cylindris fleosuosis^ 

 scabris, cortice hinc inde coalitis. Fig. XIII & n. 5. 

 1749 » » Am. Ac. p. 96. 



1758 Madrepora flexuosa, S. N. ed. X, 796. 

 1761 » » F. Su. ed. Il, 536. 



1767 » » S. X. ed. XII, 1278 (e.v errore 



tig. XXIII). 



1768 Madreporus (Helmintholitus) flexuosa, S. N. ed. XII, 



pt. III, 167. 

 This species is not to be confounded with Cyathophyllum 

 flexuosum Hisinger, Lethsea, tab. XXIX, fig. 3 a — b, of which 

 a is Cystiphyllum cylindricum Lonsdale and b Acervularia 

 truncata Wahlenb. Nor is Caryophyllia flexuosa Lonsdale, in 

 Sil. Syst. pl. 16 f. 7 identical with it; this seems rather to be 

 a variety of the polymorphic Pholidophyllum tubulatum Schloth. 

 Cyathophyllum flexuosum Edw. & H. Brit. Foss. Cor. pl. 67, 

 lig. 2, can not be regarded as the same as the Linnean species. 

 According to the description I should think it is identical 

 with an undescribed species of Diphyphyllum which lies in long- 

 stretching reefs in the shale beds along the shores on both sides 

 of Likkershamn in Gotland. The figure, although it is not 

 good, does not contradict this suggestion. The description, upon 

 the whole, corroborates my opinion, for instance, »cortice prope- 

 modum articulato» and what he says about the calicle (»Stella»), 

 and, above all, about the manner in which the polypierites are 

 connected with each other. However, the size does not agree, 



