Pakk.— Marine Tertiaries of Otago and Canterbury. 541 



34. Psammobia lineolaia, Gray. 



35. Chione vellicata, Hutton. 



36. Venericardia awamoaensis, Harris. 



37. Mactropsis traili, Hutton. 



38. Tellina angulata, Hutton. 



39. MytiLus magellanicus (?), Chemnitz. 



40. Bouchardia concentrica, Hutton. 



41. Bouchardia elongata, Hutton. 



42. Magellania parki, Hutton. 



43. Magellania insolita, Hutton. 



44. Magellania novara, Jhering. 



45. Magellania, triangularis, Hutton. 



46. Terebratula oamarutica, Boehm. 



47. Balanus (sp. ?). 



48. Meoma crawfordi, Hutton. 



The fossils enumerated in this list are those found, with 

 a few exceptions, in the fossiliferous horizons below the 

 Waitaki Stone at Kakanui, and include the majority of the 

 species held to be characteristic of the Pareora fauna. Of 

 the Mollusca, nine, or nearly 20 per cent., are still living. 



In Mount Donald and Mount Brown there is a second 

 band of impure rubbly limestone lying several hundred feet 

 below the band which occupies the summit of the ridges. It 

 is mainly composed of corals and cup-shaped bryozoans, but, 

 unlike the upper band, contains very few distinct molluscs on 

 the slopes of Mount Donald ridge facing the pass. The two 

 bands of limestone form lines of conspicuous escarpment on 

 the northern aspect of Mount Donald. They are separated by 

 soft brown sandstones, which are not well exposed except in 

 the railway cuttings. The lower band of limestone rests 

 conformably on bluish-green and grey sandstones, which are 

 well exposed in the steep banks of Weka Stream below the 

 railway-line. These beds form the "grey marls" of the 

 Geological Survey. In them I found Amussium zitteli, Hut- 

 ton, a small Dentalium, and a few small bivalves too indis- 

 tinct for identification. 



In the higher part of _the small shallow valley which runs 

 from the viaduct eastward under Mount Donald the slopes 

 are covered with large masses of hard calcareous sandstone 

 and conglomerate often crowded with brachiopods, Pseudamus- 

 sium huttoni, Cucullcea, &c. I could not satisfy myself as to 

 whether these masses were derived from the lower calcareous 

 horizon or had fallen from the summit of Mount Donald. 



In his section from the Waipara Eiver across Mount 

 Brown, a few miles south-west of Mount Donald, Haast* 

 show r s a series of Cucullcea beds resting directly upon the 



* Haast, loc. cit., p. 18. 



