160 Transactions. 



In Broken River the following were obtained :— 

 *Calyptraea maculata inflata (Hutt.). 



Cerithium hectori Harris. 



Grassatellites attenuatus (Hutt.). 



Crepidula striata (Hutt.). 

 *Diplodonta zelandica (Gray). 

 *Dosinia greyi Zitt. 



Hemiconus ornatus (Hutt.). 



Strut hiolaria tuherculata Hutt. 



From Home Creek the following were obtained : — 



Ancilla papillata (Tate). 

 * Cahjptraea maculata (Q. and G.). 

 *Calyptraea maculata inflata (Hutt.). 



Cardium spatiosum Hutt. 



Cerithium hectori Harris. 



Chione speighti Sut. 



Crassatellites attenuatus (Hutt.). 

 *Crepidula monoxyla (Less.). 



Ci/therea enysi Hutt. 

 *Diplodo7ita zelandica (Gray). 

 *Divaricella cumingi (Ad. & Aug.). 



Lima crassa (Hutt.). 



Lima kuttoni Sut. 



Lima jejfreysiana Tate. 



Mactra attenuata Hutt. 



Modiolaria elongata (Hutt.). 



Paphia curta (Hutt.). 



Pecten aff. ckathamensis Hutt. 



Plejona {Aihleta) huttoni pseudorarispina Sut. 



Polinices gihbosus (Hutt.). 



Solariella cf. sulcatina Sut. 



Sfruthiolaria tuherculata Hutt. 



Turritella 1 sp. 



An examination of these lists does not disclose any noteworthy difference 

 between the fossil content of the lower set of beds in the Porter and White- 

 water Rivers and that of the upper set, but the number of specimens 

 collected is no doubt insufficient to detect with certainty any difference 

 that may exist. 



Of the thirty-five species enumerated in the combined lists only twelve 

 are Recent — that is, 32 per cent. — a percentage which does not differ 

 appreciably from that of Recent forms in the " shell -bed " of the Porter 

 River or the tuff-beds interstratified in the limestone as recorded in 

 my paper on the Trelissick Basin. In this paper it is maintained on 

 stratigraphical grounds that there is no unconformity between the lime- 

 stones and the overlying beds yielding the fossils enumerated above, and 

 this contention is now supported by the palaeontological evidence. 



In concluding these notes I have to express my indebtedness to the late 

 Mr. H. Suter for kindly helping me with the identification of the majority 

 of these specimens, and for describing the new species of Fastigiella included 

 in the list. 



* Recent. 



