﻿Carboniferous Entomostraca from Nova Scotia. 'U9 



Carboniferous rocks on the American side of the Atlantic." 

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

 ciated with fishes of Carboniferous genera and with 

 Lepidodendra and Ferns of Lower Carboniferous types, 

 the whole being, as I have shown in " Acadian Geology" 

 and in my report on the Flora of the Lower Carboniferous 

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

 beds representing this interesting formation, the earliest 

 precursor of the conditions of the Coal-Measures. 



I have specimens of this Leperditia less perfectly pre- 

 served, from the Lower Carboniferous shales of the East 

 Branch of the East Kiver of Pictou. 



Fig. 2. Right and Left \alves, X 25. 



2. Beyrichia Nova, Scotica, Jones and Kirkby (Fig. 2.) 

 This seems to be a new species, but is very near to one 

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

 This species is less plentiful in my collections than the 

 previous one. 



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Fig. 3, X 25. 



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

 Horton represented this species in the collections sub- 



i " Acadian Geology," p. 252, et seq. Report on Fossil Plants of Lower Carboni- 

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



