332 Transactions. — Geology. 



38. Pecten semiplicatus, Hutton. 



39. Pecten convexus, Quoy. 



40. Pecten laticostatus, Gray. 



41. Anomia alectus, Gray. 



42. Ostrea edulis, Linneus. 



43. Waidheimia ovalis, Hutton. 



44. Terebratella rubicunda, Solander. 



45. Rhynchonella nigricans, Sowb. 



Of these, Dentalium nanum is at present only known from 

 the Wanganui system ; while Amphibola avellana, Cerithidea 

 bicarinata, C. tricincta, Turbo smaragdus, Corbula erythrodon, 

 Pectunculus striattdaris, Pecten radiatus, and Mytilus lattis have 

 not yet been found in the Pareora system. Of the 45 species 

 enumerated, 38, or 84 per cent., are recent. A small rolled 

 fragment of Pecten triphooki was also found, but it probably 

 came out of the Scinde Island limestone. However, I found a 

 broken and rolled specimen of this species at Moteo, near Puke- 

 tapu, which possibly had not been derived from any older rocks. 



Brick-earth. 



This formation forms the top of most of the hills, and lies 

 quite unconformably on both the Ahuriri and the Petane series. 

 It descends to the sea level on the east side of the islaud, in a 

 valley a little south of Battery Point (see section), and also in 

 two or three other places on the west side. It is a reddish- 

 brown sandy clay, or loam, often showing the "capillary struc- 

 ture " of the so-called Loess of Banks Peninsula ; from which, 

 however, it can be distinguished by its darker colour. I saw 

 pumice in it in two places. One on a hill not far from the 

 Hospital. The other in the valley just mentioned, south of 

 Battery Point. In the latter place a considerable layer of 

 pumice sand is seen on the northern slope of the valley, overlain 

 by the brick-earth. In the other locality, small fragments of 

 pumice are scattered through the brick-earth. At Battery Point 

 a thin bed of shingle lies at the base of the brick-earth, but I 

 saw no shingle at the south end of the island. 



This loam bed is used for making bricks in Napier. It is 

 also found in many places north of Napier, and is especially 

 conspicuous on the hills near Puketapu.* 



At the south-west end of the Bluff, at the sea level, below the 

 limestone quarry worked by the prisoners, is a bed of clay con- 

 taining fragments of rock, in which Mr. Hamilton informs me 

 he has found moa bones. This clay may be of tbe same age as 

 the brick-earth, or it may be younger. Probably the latter is 

 the case, but I could not satisfy myself on this point. 



* This is probably the " light-grey sandy marls," mentioned by Mr. 

 McKay as seen on the road between Puketapu and Taradale (" G-eol. Ke- 

 ports," 1876-77, p. 84) ; but it does not underlie " the limestone capping 

 the hills to the north," as Mr. McKay appears to think ; and it is not marly. 



