Canterbury and Westland. 

 Class Echixodekmata. 



313. 



Fossils. 



Authority. 



Localities. 



Pentacrinus etellatus 



Hutton 



Curiosity Shop. 



Cidaris, several species fragmentary 



— 



Common 



Echinus Enysi 



Hutton 



Broken Kiver. 



Caratomus nuperus ... 





,, 



The Deans, Waipara. 



Hemipatagus formosus 





Zittel 



Curiosity Shop. 



„ tuberculatus .. 









Amphidotus sulcatus 





Hutton 



Waihao. » 



Brissiopsis alta 





» 



Waitaki. 



Hemiaster posita 





j) 



Curiosity Shop, Mt. Somers. 



Meoma Crawfordi ... 







Common. 



„ tuberculata . . 







Broken River. 



Schizaster rotundatus 





Zittel 



Waitaki, Curiosity Shop. 





Cbttstacea. 





Fossils. 



Authority. 



Localities. 



Harpactocarcinus tumidus ... 



H. Woodward 



Double Corner. 



Igkeotjs Bocks. 



I have already pointed out that during the deposition of the upper 

 calcareous strata, eruptions of basic rocks have taken place. At the 

 Limestone Bluff, amongst other localities, beds of lapilli and ashes 

 have been formed between these eruptions, on the southern side of the 

 Ashburton. In other localities, these volcanic tufas are represented 

 by palagonite tufa, of which a specimen was analysed by the Chevalier 

 Charles de Hauer, the results showing that it corresponds very well 

 with the analysis of specimens obtained in other countries.* 



I think that the dykes found at the entrance of the north Ashburton, 

 consisting of a basic (doleritic) rock, at the gorge of the Eakaia, and at 

 the Acheron, where the rock has a more granitoid texture, have been 

 erupted about this time. More to the south, the submarine eruptions 

 have taken place on a still larger scale, of which the dolerite plateau 



Analytxt of Palagonite Tufa from the Two Brothers, 



between Rivers Ashbi 



Hon and Northern Kindt. 



(Chevaliee 



Chaeles de 



Haueb.) 





Silica 









45.12 



Alumina ... 









13.41 



Sesquioxyde oi iron 









14.09 



Carbonate of lime 









8.45 



Lime 









4.95 



Magnesia ... 









1.4S 



Potash 









0.34 



Soda 









0.40 



Water 



... 







11.83 



100.12 



