206 MOLLUSCA OF THE PAREORA AND OAMARU SYSTEMS OF N.Z., 



removed, I cannot detect any palreontological break in the system. 

 No doubt there is a considerable difference between the fossils of 

 the upper and the lower beds, but deposition appears to have been 

 continuous during the whole time and I cannot make out any 

 distinct line of separation. 



Also no stratigraphica.l break has, as yet been proved between 

 any parts of the Pareora System. 



Dr. Hector certainly remarks in his Progress Report for 1S77-8 

 (p. IV.), that Mr. McKay had found the " Wairarapa Limestone 



and underlying Taueru clays to rest uncom- 



formablyon the Taipo beds," and Mr. McKay himself says, "I 

 consider that there is sufficient evidence to prove unconformity 

 between these beds and the Taipos, which I shall adduce when 

 describing those rocks,'*' (La, p. 20). But he never does adduce 

 this evidence. 



The stratigraphical position of the fossils from Kakahu is uncer- 

 tain. The beds containing them appear to dip under limestones 

 belonging to the Oamaru System, but the section does not prove 

 this absolutely and it is quite possible that the fossiliferous beds 

 may have been thrown down by a fault. The fossils themselves are 

 mostly Pareora forms, but a few are not known elsewhere. Under 

 these circumstances I have admitted them into the list as belonging 

 to the Oamaru System but with a note of interrogation. 



CEPHALOPODA. 



Aturia ziczac, Sowb. var australis McCoy, Prod. Palas. Victoria, 



Decade III., pi. 24. 



Pareora System. — Waihao-forks ; Hampden. 



Oamaru System. — Kakanui; Weka- pass Stone ; Waihemo. 



GASTROPODA. 



Cylichna striata, Hutton, Cat. Marine Moll, of JST.Z., p, 52. 

 Pareora System. — Awamoa ; Pareora. 

 Found also in the Wanganui System. 



