Speight. — The Tertiary Beds of the Trelissick Basin. 



349 



fifteen species five occur in lower beds of the series, while the following 

 are unrecorded : — 



*Chione yatei (Gray). 

 *Crepidula costata (Sow.). 



Cucullaea worthingtoni Hutt. 

 *Cytherea oblonga (Hanley). 

 *Glycymeris laticostata (Q. & G.). 



Lima crassa Hutt. 



*Serpulorbis sipho (Lamk.). 



T urritella cavers// amei isis Ha rri s . 

 *T urritella rosea Q. & (J. 



Volutospina (Athleta) huttoni Sut. 

 var. pseudorarispina (McCoy). 



Of these ten species, five are Recent and five extinct forms. 

 From the upper beds of the Whitewater Creek and the Thomas River 

 Hutton collected the following Mollusca (loc. cit., p. 409) : — 



Ancilla australis (Sow.). 

 *Anomia undata Hutt. 



Bathytoma sulcata (Hutt.). 

 *Calyptrea maculata (Q. & G.). 

 *Cantharidus tenebrosus A. Ad. 



Cerithium nodosum Hutt. 

 *Chamostrea albida (Lamk.). 



Cominella cariuata (Hutt.). 

 *Cominella maculata (Mart.). 



Crassatellites ampins (Zitt.). 

 *Crepidula monoxyla Less. 



Cytherea enysi Hutt. 



Dentalium solidum Hutt. 

 *Fulgoraria arabica Mart. 

 *F'dgoraria gracilis (Swains). 

 *Glycymeris laticostata Q. & G. 



Hemiconus trailli (Hutt.). 



Macrocallista assimilis (Hutt.). 



*Mactra discors Gray. 

 *Mytilus canaliculus Mart. 

 *Natica australis Tate. 



Olivella neozelanica (Hutt.). 



Perna sp. ind. 



Polinices gibbosus (Hutt.). 



Polinices huttoni Iher. 



Polinices ovatus (Hutt.). 

 *Siphonalia mandarina (Duclos). 



Struthiolaria cingulata Zitt. 



Struthiolaria obesa Hutt. 



Struthiolaria tuberculata var. B Hutt. 



Surcula hamiltoni (Hutt.). 

 *Thais succincta (Mart.). 



Turbo superbus Zitt. 

 *T urritella symmetrica Hutt. 



Venericardia pseutes Sut. 



Volutospimi (Athleta) huttoni Sut. 



The following is a list of the fossils obtained in the small tributary of 

 Whitewater Creek coming in from the north, in what may be called the 

 Struthiolaria bed from the number of remains of this genus occurring. The 

 same bed is met with in a similar stratigraphical position in the Porter 

 River between the gorges and in the Thomas River. 



Polinices gibbosus (Hutt.). 

 *Psammobia stangeri Gray.| 

 WStruthiolaria tuberculata Hutt. 



Ancilla papillata (Tate). ! 

 *Crassatellites obesus (A. Ad.). 

 Crepidida gregaria Sow. 

 Gylichnella enysi (Hutt.). 



In Murderer's Creek, just below| Parapet Rock, from beds which are 

 in the same stratigraphical position as the foregoing, the following were 

 obtained : — ■ 



Siphonalia cf. nodosa (Mart.), 

 imperfect specimen.) 



(An 



Crassatellites ampins (Zitt.). 

 Mesodesma australe (Gmel.). 

 Polinices gibbosus (Hutt.). 



The salient features brought out by these lists are as follows : — 

 (1.) The lowest beds contain a Tertiary land flora. 



(2.) Over these lie conformably beds containing a Cretaceous marine 

 fauna, a fauna which in other parts of New Zealand, such as at Malvern 



