i6o 



Tranm ctivtis . — (J co to r/ 1/ . 



Dr. Hectoi' and Mr. McKay also meutiou Fecten zitteUi (called P. 

 pleiironectes) from the marl, but Mr. Euys lias never seen this 

 species in the Trelissick Basin, and it is not included in Mr. 

 McKay's list of fossils at the end of his report. 



In the sandy beds above the marl in "White-water Creek, I 

 noticed the cast of a Flahellim (?) and another of Cardita, 

 (apparently C. patagonica). In his report Mr. McKay says that 

 Fecten hutchinsoni comes from these beds at the first gorge of 

 the Porter ; but in the list of fossils at the end of the report it is 

 said to have come from what he supposed to be the same beds 

 in "White-water Creek, but which I shall presently show belong 

 to a higher horizon. I searched in vain for fossils in these beds 

 at the first gorge of the Porter, and consequently I suppose that 

 it is Mr. McKay's list and not his report that is correct. In the 

 limestone at Coleridge Creek I noticed a Wuldheimia (?), spines 

 of an echinoderm, and a net-coral [Fletepora). 



Correlation of the Beds. — That these rocks belong to the 

 Waipara System is admitted by all geologists, and the sequence 

 is very like that at the "Waipara. 



«>"Eep. Geol. ExpL," 1870-71, p. 9. 



In mineral characters the Amuri limestone at Waipara and 

 "Weka Pass closely resembles the limestone which forms the 

 upper member of the system in Trelissick Basin, and 1 have 

 elsewhere shown that in the Weka Pass District the Amuri 

 limestone is the upper member of the Waipara. System ;f so that, 

 stratigraphically and lithologically, they appear to bo the same. 

 Both are equally destitute of fossils. The ofticers of the Geolo- 

 gical Survey correlate this limestone with the Weka Pass stone, 

 but I cannot see on what evidence they rely. Certainly it dots 

 not contain any of the fossils charactLiistic of the Weka Pass 

 stone, which are similar to those of the Curiosity Shop beds J, 



t Quar. Jour. Geol. Soc. of London, vol. xli., p. 266. 

 \ Quar. Jour, Geol. Soc. of London, vol. xli., p. 



