A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA, 

 By p. H. MACGILLIVRAY, M.A., LL.D. 



(With Plates I.— XXII.) 

 Read ISth December, 189J:. 



The Australian seas have long been known to be very rich in their Polyzoan fauna, 

 the species of which also possess many characteristic features. Those occurring on 

 the coasts of Victoria are now fairly well known, about 400 species having been 

 accurately determined. In the other colonies so much attention has not been 

 bestowed on them, and the numbers recorded are much smaller ; but there is no 

 doubt that further research will furnish an equally extensive list from their coasts. 



In Victoria, as well as in South Australia, there are numerous tertiary 

 formations containing large deposits of Polyzoa, the accurate determination of which, 

 especially in relation to the living species, is of great geological interest. The 

 present paper has been prepared as a contribution to that work. The localities 

 which have furnished the specimens I have had at my disposal in its preparation are 

 Bairn.sdale, various localities in the Geelong district (Corio Bay, Waurn Ponds, 

 Belmont, Moorabool, and Bird Rock), Muddy Creek near Hamilton, Lake 

 BuUenmerri near Camperdown, and a section at Gellibi'and. The material from 

 Bairnsdale was supplied to me by Mr. Gregson, the specimens from the Geelong 

 district. Lake BuUenmerri and Gellibrand by Mr. T. S. Hall, those from Moorabool 

 by Mr. H. Grayson, and the material from Bird Rock by Mr. J. Dennant ; and I 

 have to thank these gentlemen for their kind assistance. The Schnapper Point and 

 Muddy Creek specimens were collected by myself 



The papers already published on the subject with which I am acquainted are a 

 li.st, without descriptions, by Mr. Busk, in the Quarterly Journal of the Geological 

 Society of London for 1859, of species collected at Mount Gambler in South 

 Australia by the Rev. J. E. Tenison Woods ; papers by Mr. Woods himself in the 

 Transactions of the Royal Societies of New South Wales, Victoria, and South 

 Australia; a paper by Mr. J. Bracebridge Wilson on Fossil Catenicellas, in the 

 Journal of the Microscopical Society of Victoria ; a Synopsis of the known species of 

 Australian Tertiary Polyzoa by Mr. R. Etheridge, Junr., in the Transactions of the 

 Royal Society of New South Wales for 1877 : and a series of important papers by 

 Mr. A. W. Waters in the Journal of the Geological Society of London. In the 



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