[Proc. Roy. Soc. Victoria, 33 (N.S.), 1921.] 



Art. XIII. — New or Little-known Victorian Fossils in the 

 National Museum. 



Part XXV. — Some Silurian Tabulate Corals. 



By FREDERICK CHAPMAN, A.L.S., F.R.M.S., Etc. 



(Palaeontologist to the National Museum and Lecturer on Palaeontology,. 

 Melbourne University). 



(With Plates IX., X., XI.) 

 [Read 9th December, 1920.] 



Introduction. 



The limestones and originally calcareous mudstones of the- 

 Yeringian series of Victoria afford a rich field for research,, 

 especially in regard to the corals. The following six new species 

 help to elucidate the undescribed tabulate forms, though there is. 

 a large number of the rugose corals still to be determined. 



A new locality is recorded for Favo sites f orb est, whilst the new 

 species, F. spinigera, affords additional evidence, in its alliance 

 to F. grandipora, in support of the subgeneric value of Emmon- 

 sia, Edwards and Haime. 



The opportunity is here taken to enlarge on certain interesting 

 morphological details concerning the remarkable coral, Pleuro- 

 dictyum, the Victorian species of which, P. megastomum, has. 

 thrown much light on the relationship of the genus to others of 

 the Favositidae. 



Specially noteworthy is the record of a Silurian Michelinia,. 

 which bears all the characters of the later occurring species of 

 the genus, of Devonian and Carboniferous ages. 



The description of two new species of Silurian Alveolites from. 

 Cave Hill shows how little this coral fauna has been investigated. 



The Romingeria is the second described species from the Aus- 

 tralian palaeozoic, the genus, with some reservation, having been 

 first noted by Etheridge from the Devonian Burdekin Limestone 

 of Queensland. 



Syringopora occurs for the second time in Silurian rocks in 

 Australia; it is a common component of the Australian Devonian 

 and Carboniferous faunas. 



