82 Proceedings of the Royal Society of Victoria. 



Some of the specimens have strongly concave and slightly 

 irregular tabular. For the same reason it would be perhaps better 

 to consider Sir Frederick McCoy's F. goldfussi,^ as he himself 

 remarks, as a synonym of F. gothlandica, as Nicholson has done 

 in the case of European specimens. The latter author i-emarks :'- 

 'As has been previously said, F. gothhuidica was regarded by 

 Milne-Edwards and Haime as essentially a Silurian species, and 

 the corresponding Devonian forms were separated by them under 

 the name of F. Goldfussi. This latter species is separated by 

 its authors from F. gothhuidica simply upon the ground that its 

 corallites are said to be larger, and that the mural pores are 

 more closely set than in the Silurian form. The size of the 

 tubes (one and a half line) is, however, frequently exceeded by 

 typical Upper Silurian examples of F. gothlandica, and under 

 any circumstances cannot be regarded as a character of the 

 smallest specific value, while the mural pores exhibit at least 

 an equal variability. I ant, therefore, quite unable to accept 

 the separation of F. Goldfussi from F. gothlandica^ 



There can be no benetit derived from classing the forms in 

 different species according to the Australasian horizons they 

 come from, as the variations are as great here as in the Old 

 World. It would, I think, therefore, be better to consider all 

 forms coming under the wide specific range allowed by Nicholson 

 as Australian representatives of F. gothlandica. 



The species occurs in Victoria in rocks classed as Upper 

 Silurian and Devonian. In Queensland the limestone of the 

 Broken River (Burdekin), which has been classed by Messrs. 

 Jack and Etheridge as Middle Devonian, and which may perhaps 

 be correlated with the Siluro-Devonian Limestones of New South 

 Wales, as has already been remarked by Mr. R. Etheridge, Junr. 

 In New South Wales it is extremely common and variable and 

 occurs in Uj^per Silurian, Siluro-Devonian, and the Moonbi 

 Limestones which have been lately referred by Professor David 

 to the Devonian. 



1 Prod. Pal. Viet., 1S76, Dec, iv., p. 13, t. 35, f. 1-1(L 



2 hoc. cit., p. 54. 



