MansuaLL.—Early Tertiary Molluscan Faunas of New Zealand. 119 
Limopsis zitteli Ihering. Turbonilla antiqua Marshall. 
Marginella conica Harris. Turris aft. altus (Harris). 
Mitra hectori Hutton. Turris bimarginatus Suter. 
Mitra inconspicua Hutton. Turris complicatus Suter. 
Natica australis Hutton. Turris duplex 
Natica gibbosa Hutton. Turris regius Suter. 
Natica zelandica Q. & G. Turritella aldingae Tate. 
Nuculana bellula (A. Ad.). Turritella ambulacrum Sowerby. 
Nuculana semiteres (Hutton). Turritella carlottae Watson. 
Pecten huttoni (Park). Turritella semiconcava Suter. 
Pecten waihaoensis Suter. Venericardia subintermedia Suter. 
Sarepta solenelloides Marshall. Verconella nodosa (Martyn) var. 
Surcula antegypsata Suter. extinct. 
Surcula ordinaria Marshall. Verconella turrita (Suter). 
Surcula pareoraensis Suter. Vexillum apicale (Hutton). 
Surculu serotina Suter. Vexillum apicicostatum Suter. 
Terebra sulcata Marshall. Vexillum linctum Hutton. 
Trigonia ? sp. Vexillum вр. 
Triploca sp. Voluta corrugata Hutton. 
An analysis of this list of species is of particular interest from the point 
of view of a demonstration of the affinities of the Waihao fauna. The 
following summary gives an idea of these affinities: 17 per cent. of them 
e 
deposits; 43 per cent. occur among the 215 species of the Target Gully 
species; 10 per cent. are of Recent occurrence. 
ber of Recent species is still so small that the beds should 
probably be considered as of Upper Eocene age. It is now agreed by all 
geologists who have studied the Oamaru district that there is no strati- 
graphical break beneath or above the limestone formation in that district. 
The study that we have made of the Waihao and of the Target Gully fossils 
strongly supports that conclusion. 
If the fauna of MeCullogh's Bridge is a fair sample of the fauna that 
lived in the Oamaru area immediately before the deposition of the limestone, 
and if that of Target Gully is also a fair sample of the fauna that existed 
