CarhonlfernuH Enlovtodrdca from Nnva Scotia. IU9 



Carboniferous rocks on the American side of the Atla.itic." 

 I may add that in Nova Scotia, as in Scothmd, it is asso- 

 ciated witii tiahes of Carboniferous genera and with 

 Lepidodendra and Ferns of Lower Carboniferous types, 

 the whole being, as I have shown in " AcacUan (Jeology" 

 and in my report on the Hora of the Lower Carboniferous 

 in Nova Scotia,' a very precise equivalent of the European 

 beds representing this interesting formation, the earliest 

 j^,vot'ursor of the conditions of the Coal-Measures. 



I have si)ecimens of this Leperditia less perfectly jn-e- 

 servfd, from the Lower Carboniferous shales of the East 

 Branch of the E^ist River of I'ictou. 



I 



Fig. 2. Right and Left ^ al vos, x 2.'i. 



2. Bi't/richia Nova Scotica, Jones and Kirkby (Fig. 2.) 

 This seems to be a new species, l)ut is \'ery near to one 

 found by Eichwald in Eussia — B. Colliculiis, Eichwald. 

 This species is less plentiful in my collections than the 

 previous one. . . 



^01 



Fig. 3, 1 25. 



3. Beyrichia Sp. (Fig. 3.) A single small valve from 

 Horton represented tliis species in the collections sub- 



1 "Acadian Geology," i>. 262, tt aeq. Report oiiFossil Plants of Lower Carboni. 

 ferous, etc., Geol. Survey of Canada, 1873. 



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 I 



