NEW BRUNSWICK. 579 



has been kindly communicated to me by Professor Bailey, and lias 

 been submitted to Mr Billings, who rcg.ards the species as equivalent 

 to those of the Port Daniel limestones of the northern side of the Bay 

 de Chaleur, which may be regarded as intermediate in age between 

 the Niagara and Lower Helderberg groups, and therefore probably 

 not for from the horizon of the Upper Arisaig series, or perhaps 

 between this and the Lower Arisaig group. 



The following fossils from Dalhousie and Restigouche, now in the 

 Museum of the University of New Brunswick, have been determined 

 by Mr Billings. The assemblage is in the main that of the Lower 

 Helderberg. 



Favosites basaltica. 



Favosites Gothlandica. 



Zaphrentis, n. s., same as one in the Gaspe limestone. 



Stenopora. 



Halysites catenulatus. 



Syringopora. 



Diphyphyllum. 



Orthis tubulistriata. Hall, or allied. 



Orthis oblata. Hall. 



Strophomena rhomboidalis. 



Strophomena punctifera, Conrad. 



Strophomena varistriata. 



Spirifera cycloptera. 



Atrypa reticularis. 



Cyrtia Dalmani. 



Rhynchonella vellicata. Hall. 



Athyris princeps, or allied. 



Leptocoelia, allied to L. hemispherica. 



Fenestella. 



Megambonia, allied to M. ovoides, Hall. 



Conocardium. 



Pleurotomara, allied to P. labrosa, Hall. 



Euomphalus sinuatus (?) 



Dalmanites. 



General Remarl's. 

 The group of partially metamorphic Upper Silurian rocks above de- 

 scribed includes the most elevated land of Nova Scotia and Southern 

 New Brunswick. The Cobequid range, attaining at several pouits a 

 height of 1200 feet, is the highest chain of hills in Nova Scotia ; and 

 forms, in its whole length, the watershed dividing the streams flowing 



