378 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [March 26, 



Journ. Geol. Soc. 1865, p. 125 (e) ; Progress Report, 1866-67, p. 17 

 (4, Cretaceo-Tertiary) ; ibid. 1868-69, p. xii (5, 6 and 7) ; Geol. 

 Reports, 1870-71, p. 54, Malvern-Hill District, sec. i. d, see. ii. 

 a to e, sec. iii. d ; Trans. N. Z. Inst. iv. 345, Cretaceo-Tertiary 

 (b, c, d and e) ; Parliamentary Papers relating to Coal Mines, 1872, 

 p. 9, Grey-river District, p. 11, Monnt-Roclifort District, and p. 27, 

 Nelson. Hochstetter, New Zealand, 1867, p. 57 (Jurassic, a and b) ; 

 ibid. p. 58 (c, e and/). Hood, Quart. Journ. Geol. Soc. 1870, p. 409. 

 Hutton, Geol. Reports, 1871-72, Southland District, p. 99 (e). Owen, 

 Report Brit. Assoc. 1861, Trans, p. 122 ; Geological Magazine, 1870, 

 p. 49. 



Remarks. — This formation occurs on both sides of the Alps in 

 the South Island. The lower beds consist of slates, shales, clays 

 and sandstones, generally with coal, while the upper beds are cal- 

 careous. In the North Island it has not yet been recognized. 

 Paheontologically it is more nearly related to the Eocene than to 

 the Jurassic formations ; stratigraphically it is almost equally widely 

 separated from both. 



This is the Cretaceo-Tertiary formation of Dr. Hector, excluding 

 the Ototara group, which he considers the upper part of it. In 

 his Geological Map of New Zealand he has also included the 

 Jurassic rocks in it. It contains a species of Myacites, as well as 

 one of Dosinia, two species of Inoceramus, one of Trigonia, one of 

 Belemnites, and one of Belemnitella, as well as others of less import- 

 ance. In it are also found Lucina americana of the Cretaceous 

 rocks of South America, as well as Dentalium ma jus, Cucidlcea alta, 

 and Waldheimia patagonica of the Miocene beds of the same 

 country. Among the Brachiopods we find one living species, viz. 

 Rliynclionella nigricans. Among the Echinodermata we find a 

 species of Galerites (?) ; but all the rest are Tertiary forms, some of the 

 genera being still living : they are Macropneustes (1 sp.), KJeinia 

 (1 sp.), Eupatagus (1 sp.), Meoma (1 sp.), and Scliizaster (2 sp.). 

 Three species of Pentacrinus are also found, one of which occurs 

 also in the Ototara group, as well as Cucullcea alta, while another 

 species of Cucidlwa is found both in this and in the Oligocene 

 formations. On the other hand Inoceramus Haasti, from the Jurassic 

 rocks of Kawhia, is also found at Amuri, while in both the Malvern- 

 Hill and Amuri groups the remains of Plesiosaurus and Crocodilns (?) 

 are found plentifully. These reptilian remains are in situ ; for 

 shells characteristic of the formation have been found in the con- 

 cretions with the bones. The plants are chiefly dicotyledons. 



Volcanic Rocks. 



North Island. — Yolcanic action commenced near Auckland during 

 the deposition of the Waitewata group, and from that time to the 

 present it has been more or less continuous in some part or other of 

 the northern, western, or central parts of the island. 



References. — Dana, U. S. Exploring Exp. 1849 (Bay of Islands). 

 Davis, Geol. Reports, 1870-71, p. 56 (Thames Gold-fields). Heaphy, 



