Section IV., 1897. [ 163 ] Trans. R. S. C. 



YII. — Studies on Cambrian Faunas. 

 ]ij Ct. F. Matthew, M.A.. D.Sc, LL.D. 



(Read .June ttwX, 189G.) 



CONTENTS. 



Part I. — On a new sub-fauna of the Paradoxides beds of the St. 

 John Group. 



Introduction 165 



Description of the measures 166 



Description of the species 168 



List of the species 190 



Elements contained in this sub-fauna 191 



Eelation to the Olenellus Fauna 193 



Part II. — Billings' Primordial fossils of Vermont and 



Labrador , 194 



Description of the ])hites ,.. 201 



PAET I. 



On a new sub-fauna op the Paradoxides beds of the St. John 



Group. 



Introduction. 



In the beginning of this year (1897) the writer undertook the 

 examination of material collected some years ago on the south shore of 

 the Kcnnebecasis E. in the province of New Brunswick, Canada, at a 

 place called Hastings Cove, about three-quarters of a mile from Torry- 

 burn Station on the Intercolonial Eaih'oad. Other collections made at 

 this locality a few years ago by Dr. W. D. Matthew and a small lot 

 gathered by the writer in the previous summer (1896) were examined at 

 the same time. The earlier collections were not sufficient to differentiate 

 the fauna from that of the Paradoxides Abenacus Sub-zone, but from 

 the later collections im])ortant results have been obtained. 



Hitherto we had failed to discover in the Paradoxides faunas of 

 America, anything corresponding to the grouping of species that exist 

 in the '' Upper Paradoxides Beds " of Sweden, so that an important 

 fauna of that country had so far been wanting in America. The fullest 

 expression of this upper fauna of the Paradoxides beds is found in the 

 Andrarum Limestone of Sweden and in corresponding deposits in Nor- 

 way. It is marked by the appearance of the genera Anomocare, Dolicho- 



