Cockerell — On the Genus Notemigonus. 213 



(c) Blicca Heckel. A. blicca L., A. sopa Pall., A. vimba L. 



(d) Group? A. elongatus Ag. 



Ballerus Heckel. 

 B. ballerus L. 



(B) American fishes, not closely related; circuli not dense; nuclear area 

 subbasal. 



Notemigonus Rafinesque. 



Notemigonus chrysoleucas (Mitchill). 

 Notemigonus chrysoleucas bosci {Cuv. and Val.). 

 Notemigonus gardoneus {Cuv. and Val.). 



The scales described were in every case taken from the vicinity of the 

 lateral line, at the level of the beginning of the dorsal fin. 



