450 UPPER CAMBRIAN AGE OF DICTYONEMA SLATES. AMI. 



loaned to me for study and reference by Prof. L. W. Bailey of 

 the University of New Brunswick, it was readily seen that the 

 Benton specimens were also Upper vJambriau in age. 



In order to ascertain definitely whether D. Websteri, 

 Dawson, from New Canaan, was identical with D. flabelliforme, 

 the type specimens of the former, which formed part of the 

 Dawson collections in the Peter Redpath Museum of McGill 

 University, were sought, and kindly loaned to the writer by Prof. 

 F. D. Adams. These are preserved on two slabs of more or less 

 hardened sericeous or glossy red shale or slate, and scattered 

 over the surface of the slates in a rather fragmentary state of 

 preservation, 'except in one specimen, from which the illustration 

 on p. 563, (fig. 196,) was very probably made when the " Acadian 

 Geology " was prepared. 



From a careful study of all the material in hand, the writer 

 is satisfied that the upper beds of the Cambrian System are thus 

 represented in that portion of Nova Scotia where the Dict- 

 yonema flabelliforme beds of Kentville, New Canaan, and the 

 Gaspereau Valley, (south side,) occur. 



We thus find that the zone or horizon of Dictyonema flabelli- 

 forme, Eichwald, occurs at the following localities in Canada, 

 which may consequently be referred to the Upper or Neo- 

 Cambrian : 



(1.) Matane, Quebec, South Shore of St. Lawrence River. 



(2.) Cape Rosier, Gasp6, Que., near Lighthouse. 



(3.) Barachuis, Cape Breton, Nova Scotia. 



(4.) Navy Island, near St. John, New Brunswick. 



(5.) Shales near Benton, above Fredericton, York County, 



New Brunswick. 



(6.) New Canaan, Annapolis Count}', Nova Scotia. 

 (7.) Kentville, Annapolis County, Nova Scotia. 

 (8 ) Angus Brook, Gaspereau Valley, Kings County, Nova 



Scotia. 



Associated with Dictyonema flabelliforme at Angus Brook, 

 are found obscure remains of a Bryograptus, allied to B.Kjeridjl 

 from the Upper Cambrian of Scandinavia. 



