464 



Transactions. 



Shag Point conglomerates that contain the coal. The length of coast-line 

 between the Onekakara beds and Shag Point is about twelve miles, but 

 as it is generally parallel to the strike of the strata the actual thickness 

 of strata exposed within this distance is small. Probably no more than 

 300 ft. separate these fossiliferous beds from the conglomerates at Shag 

 Point. Above the fossil-bearing beds there are the volcanic tuffs and 

 breccias called the Waireka tuffs, and these are sometimes associated with 

 basaltic lava-flows. These in turn lie below the Oamaru (Ototara) lime- 

 stone. 



In identifying the Mollusca I am greatly indebted, as on previous 

 occasions, to Mr. H. Suter, who kindly undertook the rather tedious task. 

 The following is the list of species :— 



Aturia sp. 

 Circulus n. sp. 

 Cerithidea n. sp. 

 Cerithiella n. sp. 

 Turritella symmetrica Hutton. 

 Turritella ornata Hutton. 

 Turritella n. sp. cf. aldingae Tate. 

 Struthiolaria cincta Hutton. 

 Sinum {Eunaticina) elegans Suter. 

 Ampullina waihaoensis Suter. 

 Ampullina suturalis Hutton. 

 Erato n. sp. 



Cymatium minimum Hutton. 

 Galeodea senex Hutton. 

 Epitonium rugulosum lyratum Zittel. 

 Epitonium n. sp. 

 Turbonilla n. sp. 

 Dicroloma ? 

 Fusinus solidus Suter. 

 Fusinus n. sp. 

 Exilia waihaoensis Suter. 

 Latirus n. sp. 

 Siphonalia nodosa Martyn. 

 Siphonalia turrita Suter. 

 Belophos n. sp. 

 Volutoderma n. sp. 



Cymbiola (Miomelon) corrugata (Hut- 

 ton). 

 Ancilla novae-zelandiae Sowerby. 

 Marginella n. sp. 

 Turris duplex Suter 



Turris nexilis bicarinatus Suter. 



Turris complicatus Suter. 



Turris complicatus nov. var. 



Turris regius Suter. 



Turris n. sp. cf. neglectus and regius. 



Turris n. sp. cf. neglectus. 



Surcula hamiltoni Hutton. 



Surcula serotina Suter. 



Surcula n. sp. 



Surcula n. sp. cf. pareoraensis. 



Bathytoma sulcata Hutton. 



Terebra costata Hutton. 



Terebra n. sp. 



Gilbertia tertiaria Marshall. 



Bullinella enysi Hutton. 



Dentalium mantelli Zittel. 



Malletia n. sp. 



Cucullaea alia Sowerby. 



Sarepta obolella Tate. 



Sarepta n. sp. 



Area novae-zelandiae Smith. 



Area (Bathyarca) n. sp. 



Limopsis zitelli Ihering. 



Trigonia n. sp. 



Lima angulata Sowerby. 



Atrina sp. 



Ostrea ivuellerstorfi Zittel ? 



Cardium sp. 



Cardium (Papyridea) sp. 



Pecten huttoni Park. 



There are thus altogether sixty species, of which the following six are 

 Recent : Turritella symmetrica Hutton, Siphonalia nodosa Martyn, Anc'lla 

 novae-zelandiae Sowerby, Sarepta obolella Tate, Area novae-zelandiae Smith, 

 Lima angulata Sowerby. It thus appears that no more than 10 per cent. 

 of these sixty species are Recent — a very low result when compared with 

 those obtained by previous collectors. The following show Mesozoic affini- 

 ties : Volutoderma, Dicroloma, Trigonia n. sp. The specimens referred to 

 Dicroloma are not well preserved. The species is certainly an Aporrhaid, 

 but not Aporrhais or Hemichenopus. To these must be added Trigonia 

 neozelanica Suter, which was collected by Hutton. 



