446 Transactions. 



Lamellibrancrta. 



Panopea worthingtoni Hutton. (Plate XXXIII, fig. 4.) 



This specimen was identified for me by Mr. Suter. The species comes 

 very near P. orbita Hutton. It is not uncommon in the Cainozoic rocks 

 of New Zealand. It is recorded by Hutton from Lake Wakatipu and the 

 Broken River. 



Phacoides (Here) sp. 



This specimen occurs as a cast only, and it has been classed for me by 

 Mr. Suter. No other specimen of this genus has yet been recorded from 

 New Zealand. In regard to the subgenus Here Cossmann remarks, " II 

 est douteuse que ce sous-genre ait vecu dans l'Eocene." (Cossmann et. 

 Peyrot, Oonchologie de V Aquitaine, 1911, livraison 2, p. 687.) 



Inoceramus fragments (Park, Geol. Rep. N.Z., 1886-87) : I have found 

 no remains of this genus. 



This collection is of special interest. From a stratigraphical stand- 

 point there hardly seems any room for doubt that this bed is of a higher 

 horizon than the limestone of the Gibraltar Rocks. As stated earlier, 

 this limestone contains a considerable amount of Amphistegina, and has 

 other characteristics that cause Chapman to regard it as of Miocene age. 

 A similar limestone almost at the base of the younger series of rocks at 

 Waiomio is also stated by Chapman to be of the typical Miocene character. 

 On the other hand, this ammonite bed lies distinctly below the hydraulic 

 limestone. From a palaeontological standpoint the determination of the 

 age of the beds offers much difficulty. It is clear that the ammonite fauna, 

 poor as it is, clearly indicates a Senonian age. On the other hand, Panopea 

 worthingtoni occurs widely in New Zealand in beds that are always classed 

 as Tertiary, and generally as Miocene. This suggestion is apparently 

 emphasized by the occurrence of Here. (A further collection has now been 

 made, and many more species of ammonites, lamellibranchs, and some 

 gastropods have been found. These will be described subsequently.) Hector 

 placed these beds in the Cretaceo-Tertiary, Cox in the Lower Greensand, 

 and Park agrees with Hector (?) that they are Jurassic. 



The Pahi Greensands. 



The fossils in these beds are in a bad state of preservation, and identifi- 

 cation of the species has proved so difficult that no list can be given at 

 present. 



Pakaurangi Point Beds. 



The beds at Pakaurangi Point have been long known to contain 

 fossils. Hector collected some from here in 1876. Cox added to 

 the collections in 1879. Park gave a list of some seventy forms in 

 1879, though in most cases the generic position only of the species was 

 given. The following list contains the species collected in 1912 and in 

 1916 by myself, assisted by Mr. J. A. Bart rum. The material in which 

 the fossils are embedded is a soft gray mudstone, and the specimens are 

 for the most part in an excellent state of preservation. Fossils are most 

 plentiful in the low cliffs on the western (or Funnel) side of the Pakaurangi 

 Point. I am much indebted to Mr. H. Suter for identifying the species. 

 Those marked * are Recent species. 



