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Volume 55, 1924
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– 546 –

Acknowledgments.

I am indebted to Mr. R. S. Allan and Mr. H. J. Finlay for their generous loan of material and for permission to incorporate into this paper, for the sake of completeness, species that they had already separated out as new; also to the late Mr. R. Murdoch, Miss M. K. Mestayer, Dr. P. Marshall, Mr. W. R. B. Oliver, Professor R. Speight, and Dr. J. A. Thomson for their kindness in lending valuable specimens for examination.

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Table 1.—Approximate Time Ranges of Genera and Subgenera.
Palaeocene. Eocene to Miocene. Pliocene.
Oamaruian. Wanganuian.
—— Wangaloan. Bortonian (=Walhao g.s.). Wàlarekan. (Tuffs). Ototaran. Awamoan. Mokau Beds. Tongaporutuan. Onairoan. Waltotaran. Nukumaruian. Castlecliffian. Recent.
Natica
  (Carinacca n. subg.)
  (Magnatica n. subg.)
Sulconacca n. g.
Uber
  (Euspira)
Neverita
Amauropsella
Sinum
Eunaticina ?
Globisinum n. g.
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Table 2.—Approximate Specific Time Ranges.
—— Wangaloan. Bortonian (=Walhao g.s.). Wàlarekan. (Tuffs). Ototaran. Awamoan. Mokau Beds. Tongaporutuan. Onairoan. Waltotaran. Nukumaruian. Castlecliffian. Recent.
Natica praeconsors
— consortis
— sublata
— notocenica ?
— bacca
— harrisensis
— denticulifera
— haweraensis
— planisuturalis
— maoria
— maesta
— zelandica
— inexpectuta
— haasti
— waihaoensis
— allani
— sutherlandi ?
— approximata
— suteri
— nuda
Sulconacca suturalis
— prisca
— compressa
— vaughani
Uber finlayi
— senisculus
— kaawaensis
— esdailei
— incertus
— modestus
— obstructus ?
— huttoni
— sagenus
— mucronatus
— intracrassus ?
— lobatus
— unisulcatus
— waipaensis
— chattonensis ?
— propeovatus
— waipipiensis
— pateaensis
— ovuloides
— fyfei ?
— firmus
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Table 3.—Approximate Specific Time Ranges—continued.
—— Wangaloan. Bortonian (=Walhao g.s.). Wàlarekan. (Tuffs). Ototaran. Awamoan. Mokau Beds. Tongaporutuan. Onairoan. Waltotaran. Nukumaruian. Castlecliffian. Recent.
Uber lateapertus
— pukeuriensis
— pseudovitreus
— vitreus
— barrierensis
— pontis
Amauropsella major
— teres
Sinum fornicatum
— infirmum
— cinctum ?
Globisinum spirale
— elegans
— miocaenicum
— dreui
— undulatum
— venustum
Picture icon

Diagram to illustrate Terms used.

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