description are reserved for a future time, though in the 

 present issue the differential characters of twelve species are 

 given, unaccompanied by specific terms. 



Eev. J. E. Tenison Woods describes a new genus and species 

 of Polyzoan, under the name of Tetraplaria australis, obtained 

 from Miocene strata at Muddy Creek, near Hamilton, Victoria. 

 Tetraplaria is allied to Oemellaria, but the pairs of cells face 

 alternate in two ways — that is, the faces are on all four sides 

 of the cylindrical branches, and they alternate in each of the 

 opposing cells arising on the side of the centre of its alternate 

 neighbour. (Proc. Eoy. Soc, New South "Wales, vol. xii. ; 

 1879.) 



Eev. J. E. Tenison Woods describes and figures a fossil coral 

 of great beauty from the Muddy Creek Miocene beds. It 

 belongs to the genus Montlivaltia, and adds another link to 

 that chain of facts which gives the Tertiary fauna of Australia 

 such a Mesozoic aspect. The species is named M. discus. He 

 also establishes a new genus with the name of Trematotrochus, 

 and includes under it his Conocyathus fenestratus, from the 

 Muddy Creek beds, and Trochocyathus heterocostatus from the 

 Aldinga beds. The typical species of this genus combines some 

 of the leading characteristics of several sub-families ; it has 

 neither pali nor columella, and the wall is perforated. In 

 exterior form it is very like Antillia. Proc. Eoyal Soc, New 

 South Wales, vol. xii., 1879. 



" On the Cyclostomatous Polyzoa of Port Jackson." By 

 W. A. Haswell. (Proc. Lin. Soc, N.S.W., vol. iv., p. 350, 

 1879.) 



This is a descriptive catalogue of the s£>ecies of the sub- 

 order occurring in and around Port Jackson. The total of 

 fourteen is made up as follows : — Idmonea, 3 sp. (one new) ; 

 Pustulipora, 3 sp. ; Tubulipora, 1 sp. ; Discoporella, 5 sp. (three 

 new) ; Crisia, 2 new sp. 



" On some Polyzoa from the Queensland Coast." By W. A. 

 Haswell ; loc. cit., vol. v., p. 33. 



This is a list of 59 species obtained by the author at Port 

 Denison, nearly all of which were obtained with the dredge in 

 a single spot close to Holborn Island, 20 miles to the north- 

 east of Port Denison. " Here the bottom, at a depth of about 

 20 fathoms, seemed covered with little else than Polyzoa. . 

 These are no doubt in the act of forming by their gradual 

 growth and decay more or less extensive deposits analagous to 

 the Polyzoa beds characteristic of the Tertiary formations of 

 South Australia and Europe." The following are described 

 and figured as new species : — Crisia, 1 sp. ; Pustulipora, 1 sp. ; 

 Onchopora, 3 sp. ; Scrupocellaria, 2 sp. ; Membranipora. 1 sp. ; 



