Uttley. — Tertiary Geology, Otiake River to Duntroon. 147 



horizon as the Otiake beds. Fully 40 ft. of limestone underlies, and its 

 base is not seen. The fossils collected from the Otiake beds in this 

 locality were — 



*Lim.opsis aiirifa (Brocchi) 

 *Loripes concinna Hutt. 



Mangilia jjraecophinodes (?) Sut. 



Marginella harrisi Cossm. 

 *Natica zelandica Q. & G. 



Nucida saggitata Sut. 



Pecten chat hanien sis Hutt. 

 * zelandiae Gray 



Polinices gibbosus (Hutt.) 



huttoni Iher. 



Siphonalia turrit a Sut. 

 ■^Tellina glabrella Desh. 



Terebra org eta Sut. 



Teredo heaphyi Zitt. 

 *Turbonilla zealandica (Hutt.) 



Turritella ambulacrum Sow. 



caver shamensis Harris 



semiconcava Sut. 



Venericardia pseutes Sut. 

 * purjmrata (Desh.) 



Ampullina suturalis (Hutt.) 

 Ancilla papillata (Tate) 

 Anomia trigonopsis Hutt. 

 Bathytoma sulcata excavata Sut. 

 *Calyptraea alt a (Hutt.) 



* maculata (Q. & G.) 



Cominella pidchra (?) Sut. 

 Corbula canaliculata Hutt. 



humerosa Hutt. 



kai^Kiraensis Sut. 



*Crassatellites obesus (A. Ad.) 

 Crepidida gregaria Sow. 

 Cucidlaea attenuata Hutt. 

 Cy'mbiola corrugata (Hutt.) 

 Cytherea chariessa Sut. 

 Dentalimn pareorense P. & S. 



solidum Hutt. 



*Divaricella cumingi (Ad. & Ang.) 

 Epitonium lyratum (Zitt.) 

 Leucosyrinx alta (Harris) 

 Lima color ata Hutt. 



Out of this list of forty-one species, two were doubtfully identified. 

 Eleven species are Recent, giving a percentage of 27. This collection was 

 obtained after two or three hours' work, and there is not the slightest 

 doubt that many additional forms may be obtained from this locality. 



The brachiopod Pachymagas huttoni Thomson is again very abundant, 

 • and corals are also foimd similar to those fomid at Trig. Station Z. McKay 

 (1882a, p. 66) states that in this locality the Otekaike limestone rests directly 

 on the Palaeozoic rocks, and he gives a section (1882b, p. 104) illustrating 

 his views. It is true that a short distance from the present locality the old 

 rock crops out, but McKay observed no junction, as the country between 

 is obscured by heavy gravel deposits. The writer followed up the various 

 small creeks that have cut deeply into the gravels, and found the quartz- 

 grits dipping towards the limestone a short distance away close up to the 

 mountain-front, so that there is no doubt that the limestone does not lie 

 on the old rock at Otekaike. The section given by McKay (1882b, p. 104) 

 was intended to illustrate his views of the relationship between the Otekaike 

 limestone and the Maruwenua limestone, which he considered to belong 

 to difierent systems. In his first report on the locality he gave a section 

 (1882a, p. 75) showing the Otekaike limestone at a higher horizon than 

 the Maruwenua limestone in its entirety ; but in a later report during the 

 same year he gave another section (1882b, p. 104), in which he modified 

 his views considerably. He divided the Maruwenua limestone into three 

 distinct rocks, and correlated • the Otekaike limestone with the middle 

 portion of the Maruwenua limestone, and the Hutchinson Quarry beds 

 with the fossiliferous horizon {" Phorus beds") that lies at the top of the 

 Maruwenua limestone. He had previously referred these fossiliferous 

 beds to the top of the Cretaceo-Tertiary. His section shows clearly the 

 Hutchinson Quarry beds lying above the Otekaike limestone at Otekaike _ 

 (the present locality), although he makes no reference to them in his 

 report. He frequently refers, however, to the Hutchinson Quarry beds 



