The Nematognathi, or Catfishes 



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wound from which few boys' hands in the catfish region are 

 often free. 



In the caves about Conestoga River in Lancaster County, 

 Pennsylvania, is a partly blind catfish, evidently derived from 



. 

 53 



a 



QQ 



3 



8 







o 



w 



local species outside the cave. It has been named Gronias 

 nigrilabris. 



A few species are found in Mexico, one of them, Ictalurus 



