4. Stratigraphical Results.

As in previous papers by the writer, the table of stratigraphicar ranges has no claims to completeness. The stage divisions of our Tertiary strata are somewhat in a state of flux at present, and will be, no doubt, for some time. This is due to the increasing knowledge of some of the faunas; but we have still a long way to go before the relative time values of the different stages are accurately known. The European time scale of the table is only a rough approximation.

In this paper the Bortonian includes the Black Point sandstone (type locality), the Waihao greensands and “Island sandstone,” the Kakahu greensands, and the Hampden beds. This extensive series has been subdivided by Mr. R. S. Allan, whose paper will soon be available. The Waiarekan has been omitted as there are no Volutes to list from it, restricted. The Wharekuri greensands are correlated with the Ototaran at a guess; and the Clifden beds are provisionally placed with the Hutchinsonian, pending further information from Mr. H. J. Finlay's studies on the Southland faunas. The Kai Iwi beds have been separated from the Castlecliffian, as a preliminary survey indicates that a useful stage may be recognizable between the Nukumaruan and Castlecliffian.

Acknowledgments.—The writer is greatly indebted to the following for their kindness in lending specimens: Miss M. K. Mestayer, Drs. P. Marshall and J. A. Thomson, Professor R. Speight, and Messrs. R. S. Allan, H. J. Finlay, W. La Roche, and W. R. B. Oliver; also to Mr. P. G. Morgan and the officers of the Geological Survey for valuable information on stratigraphy.