118 , CAMBRIAN BRACHIOPODA. 



Geographic distribution of North American species of Cambrian Brachiopoda — Continued. 



Note. — The letters placed opposite each species in the various columns denote the State or province in which thespecies occurs; for instance, 

 a"C" in column 2 uuder A indicates that the species occurs in Cape Breton, "CN" indicates that it occurs in both Cape Breton and New 

 Brunswick. 



