286 



Notes on Post Tertiary Strata 



rule, the edge of the gorge is quite as high as the country- 

 farther inland. The same general level is maintained right 

 down to the coast, interrupted by no other depressions than 

 those formed by the river itself and its few tributaries. 



The total number of species gathered up to the present time 

 from these beds is 141. Of this number 7 are too worn for 

 perfect identification, and 13 belong to species which have not 

 been met with before, either fossil or living. The known species 

 therefore amount to 121, of which .98 are recent only, while 

 15 others, besides being recent, are fossil also in other forma- 

 tions. The remaining 8 species occur as fossil only, chiefly 

 in the older tertiaries of Victoria, South Australia, &c. 



The following table contains a list of the various species, 

 and also their distribution*: — 





Living. 



Localities where 



Species found in Limestone 

 Creek beds. 



1 



> 



.2 

 "S 



1 



* 



* 

 * 

 * 

 * 



1 



* 

 * 



1 



1 



1 



* 



* 

 * 



=3 



to 



* 



* 



* 

 * 



Fossil, and 

 Eemarks. 



Abbreviations — 

 O.T. = Older Tertiary, 

 a = upper beds, Older 



Tertiary. 

 b = lower beds, Older 



Tertiary. 



Echinodermata — 

 Goniocidaris ? 



Brachiopoda — 

 Waldheimia sp. 



Lamellibranchiata — 

 Ostrea Angasi, Soto. 



Gryphaea tarda, Hutton 



Placunanomia lone. Gray 



Pecten asperrimus, Lam. 



bifrons, Gray 



Limea austrina, Tate 

 Mytilus Menkeanus, Phil. 

 hirsutus. Lam. .. 



Spine only. 



Too worn for iden- 

 tification. 



Pareora and Wan- 

 ganui systems,N. Z 



O.T. S. Austr. (b), 

 N.Z. (b). 



O.T. S. Austr. (a). 

 Muddy Creek (b). 



Living also in Japan 



Living also in South 



America. Fossil in 



Pareora and Wan - 



ganui systems, N.Z 





* I wish here to express my great obligation to Prof. Tate, F.G.S., F.L.S. 

 for his kindness in determining for me the species of these shells. I am 

 indebted to him also for much of the information given in the table. 



