ORTMANN : TERTIARY INVERTEBRATES. 30! 



I have further tried to compare our Patagonian fossils with those of the 

 Tertiary beds of Tasmania and southern Australia, and am able to give 

 the following list of relations : 



Melicerita triforis M. angustiloba, S. Australia (? Miocene). 



Reticulipora patagonica R. transennata, S. Australia (? Eocene). 



Rhynchonclla squamosa same species in Tasmania (? Miocene). 



Nucula patagonica N. tumida, Australia, Tasmania (? Eocene). 



Leda oxyrhyncha and errastttrisn.taa&xr species in Australia. 



Limopsis insolita same species, S. Australia (? Eocene). 



Area patagonica A. pscudonavicularis, Australia (? Eocene). 



Ostrca ingens 0. stnrtiana, River Murray Cliffs (? Miocene). 



Gryplicea cf. tarda G. tarda, S. Australia (? Eocene). 



Pecten pnenundus P. palmipes, Australia (? Miocene). 



Venus meridionalis V. multitceniata and hormophora, Australia, Tasmania (? Eocene). 



Dosinia meridionalis D. denselineata, Tasmania, Victoria (? Miocene). 



Psammobia patagonica P. hamiltonensis, Victoria, Tasmania (? Eocene). 



Dentalium sulcosum D. mantelli, Australia, Tasmania (? Eocene). 



Turritella ambulacrum T. aldingce, S. Australia (? Eocene). 



Valuta triplicata V. sarissa and tateana, Australia (? Miocene, Eocene). 



Valuta ameghinoi V. atkinsoni, Tasmania. 



No attempt has been made to correct or to control the age given for 

 these Australian species. This list is very defective, since it was impos- 

 sible for me to make a closer comparison, especially because the figures 

 of Australian species given by Tate (1886-1893) are in most cases very 

 poor. Nevertheless the fact is apparent that a few identical species are 

 found, which are in part also recorded from New Zealand, and that a 

 larger number of species show close affinities with Patagonian forms. 

 The latter number will undoubtedly be increased considerably, after a 

 careful examination of the Australian fossils has been made. For the 

 present, it is sufficient to call attention to the fact that not only in New 

 Zealand, but also in Australia and Tasmania, Tertiary deposits are found, 

 which yield a fauna that shows unmistakable affinity to the Patagonian 

 fauna. 1 



'According to Harris (1897), whose Australasian Tertiary Mollusca were not consulted until 

 the above was written, I can add the following striking cases : 



Liotia scotti L. roblini Johnst. (Harris, p. 284, pi. 8, f. 4) "Eocene," Muddy 



Creek. 

 Fissurella eurytreta Fissurellidea malleata Tate (ibid., p. 287, pi. 8, f. 5) "Eocene," 



Muddy Creek. 



