XX 



List of Plates. 



J. A. Thomson — continued. 

 Plate XVIII— 



Fig. 1. Cliff of lower (concretionary) Waipara greensands 

 Fig. 2. View of the upper part of the Weka Pass 



Plate XIX— 



Fig. 1. Cliff of Weka Pass stone, overhanging Amuri limestone 

 , Fig. 2. " Fucoids " in the Weka Pass greensand . . : . 



Plate XX. — View across Waipara River below hmestone gorge . . 



Plate XXI— 



Fig. 1. SjTacline in the main Mount Brown limestone 

 Fig. 2. cuff in Weka Pass Stream, below railway-cutting 



Plate XXII— , 



Figs. 1-11. Eleven species (nine new) of Rhizothyris . . .^ 



Plate XXIII— 



Figs. 1-11. Eight species (seven new) of Rhizothyris 



Plate XXIV— 



Figs. 1-15. SjDecies of Rhizothyris, Pachymagas, and Terebratrilina 



Plate XXV— 



Figs. 1-14. Species of Neothyris and Pachymagas 



Plate XXVI— 



Figs. 1-18. Species of Pachymagas and Waiparia . . - . . 



Plate XXVII— 



Figs. 1-9. Species of Pachymagas and Neothyris 



J. A. Bartrum — 

 Plate XXVIII— 



Fig. 1. Quartz -norite, Cleddau-Hollyford Saddle 

 Fig. 2. Dolerite, Silverdale, Auckland 

 Fig. 3. Basalt, Ti Point, Whangateau . . » 



Fig. 4. Basalt, Ohakune ballast-pit 



Plate XXIX— 



Fig. 1. Granodiorite 



Fig. 2. Banded dioritic gneiss 



Fig. 3. Dolerite showing lath-like form of feldspars 



Fig. 4. Trachyte 



W. N. Watt— 

 Plate XXX— 



Figs. 1-10. Species of Parectopa . . 



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