Uttley. — Remarl's on Bulletin No. 20. ■ 173 



In the localities discussed below an attempt is made to show that where 

 the Awamoan beds are present, as in the Oamaru area, the hard calcareous 

 bands at their base are called Upper Hutchinsonian ; where the Awamoan 

 beds are not present, as at Landon Creek (west branch), the " fairly com- 

 pact glauconitic sandstone " (the " jmrki " band) is called Upper Hutchin- 

 sonian ; where the " parki " band is absent, as in Landon Creek 

 (Papakaio district), the upper glauconitic portion of the limestone is called 

 Upper Hutchinsonian (p. 64). The various localities in which the post- 

 Ototaran beds occur will now be discussed. 



IV. Hutchinsonian and Awamoan Localities. 



(1.) All Day Bay (j). 56). 



The section in this locality has been described by the writer (1916, p. 20), 

 and by Park in Bulletin No. 20. Both agree that the " darker and tougher 

 greensands " (the " parki " band) are followed directly by the Awamoan 

 beds. The section in this locality is most important, as it illustrates the 

 typical character of the beds above the limestone. Here we have in one 

 section, as shown by Park, the limestone much hardened towards its upper 

 surface, which is corroded (nodular). This surface is immediately followed 

 by the " Isis " greensands, capped by the hard " parki " band, which is 

 directly overlain by the Awamoan beds. In this locality there is no Upper 

 Hutchinsonian horizon, and Park's so-called Lower Hutchinsonian is con- 

 formably overlain by the Awamoan, which contains " hard sandstone layers." 

 Park does not recognize an Upper Hutchinsonian m this locality. 



(2.) Deborah (p. 59). 



In this section the highest bed exposed is the " parki " band, which is 

 underlain by " 6 ft. of greensands [which] contain many molluscs and 

 brachiopods." The brachiopods present in these underlying greeensands 

 are Terehratulina suessi (Hutt.) and Aetheia gaulteri (Morris), which are 

 again accompanied by the same species of Isis and Mopsea. At the base 

 of these greensands lies the nodular surface of the hard limestone which 

 closed the Ototaran at All Day Bay. No Upper Hutchinsonian is present 

 at Deborah. 



(3.) Coast North of Kakanui Quarry (p. 70). 



In this section Park shows the sequence of beds closed by a " hard semi- 

 crystalline limestone.*' The present writer has figured the complete section 

 along the coast (1916, p. 23, fig. 2). The beds form a syncline, and to the 

 north-east this hard limestone is nodular at the surface, and followed by 

 the " Isis " greensands, but the hard " piarki " band has been denuded. 

 The sequence is exactly similar to that at All Day Bay and Deborah. 

 The surface of the hard limestone is nodular, and pieces of rolled volcanic 

 rock occur at the base of the " Isis " beds and represent Park's con- 

 glomerate at the base of the Hutchinsonian. In this coastal section the 

 Upper Hutchinsonian is not stated to be present, though the limestone 

 in this locality was formerly (1905, p. 510) called Waitaki stone (Upper 

 Hutchinsonian). 



(4.) Oamaru Rifle Butts. 



In his discussion on the Hutchinsonian stage (chapter vii, p. 77) Park 

 makes no reference to the Hutchinsonian beds at the Rifle Butts, but he 



