president's address — SECTION c. 63 



doubtfully referred to Rhynchonella jileurodon, and Zaphrentis. 

 He confirms Hutton's (1899) connparison of these with the "Peirmo- 

 Carboniferous " fauna of Eastern Australia, and indeed they 

 may be referred to the upper portion of that series except B. 

 pleiirodoti, which is not known above the lower carboniferous. Sp. 

 hisificafa is more commonly in those beds alsoi than in the Permian. 

 Professor David (1919) has shown that this formation is most 

 suitably considered to be Permian. Pircutet (1917) has grouped 

 into the same series in New Caledonia, beds containing Aphanaia, 

 and those in which are found the typically Permian cephalopods, 

 Staeheoceras, Pojmnoceras and Waagcnoceras, and there therefore 

 appears no reason to regard the Maitai series as other than Per- 

 mian. 



In regard to theii' distribution, Morgan (1919) and Trechmann 

 (1917) have drawn attention to the reported occurrence of the 

 " Dun Mountain T uoccramus " in the north-east of the South 

 Island, and at various localities in the Southern Alps of Canter- 

 bury extending down to the Waitaki River. The relation cf these 

 '''Aphanaia," bearing rocks to those in which the annelid Tot- 

 Icssia McKaifi has been found is not clear, but McKay's view 

 has generally been followed, namely, that the?3: form the upjwr 

 portion cf the Maitai series. Jaworsky (1915) holds that this 

 annelid should be referred tc' the genus TcreheUina, and. 

 is of Triassic age. They are widely distributed in the 

 above regions, ' occurring here and there in the western 

 and eastern slopes of the Southern Alps in Westland and Canter^ 

 bury, extending thence across the Waitaki River into North 

 Otago, where the calcareous slates containing the " Dun Mountain 

 Inocf^ramn!^" include micaceous sandstones v/ith plant remains. 

 (McKay. 1881, p. 78). They also appear to form much of the 

 country between the Waitaki and Shag River consisting of breccia 

 beds, green and purple slates and limestone. (Cox 1882, Park 

 1918). Professor Park (1919) has recognised them again south 

 of the Taieri River, and Hcnie limestone has been noted at Akatore 

 in this neighbourhood. Remains of "Inoceramus" have also been 

 noted at Coal Hill, near Mossburn, in the west of Southland 

 (Hutton 1875, p. 36)., and the Maitai and Te Anau rocks are 

 well developed in the Takitimu and Longwood ranges forming 

 the western margin cf this Province. They may also be repre- 

 sented in the Bluff as before mentioned, hut this must be left in 

 doubt. 



The Tlokovul Sytdn. 



The relaticn between the Hokonui and the underlying Maitai 

 system has long been uncertain. Hutton consistently held that 

 there was a great unconformity marking vigorous erogenic move- 



