CATFISH GENUS NOTURUS RAFINESQUE 



189 



Map 14. — Distribution of the three species of the miurus group. The localities whence 

 I have examined specimens are shown by the symbols indicated. Many unverified litera- 

 ture records of Noturus miurus or Schilbeodes miurus cannot be assigned with certainty 

 to any member of this group. Those reports for which a presumptive identification is 

 possible fall within the ranges indicated by the specimens examined. 



Noturus flavipinnis, new species, is known only from the upper Tennessee River system. 

 Noturus miurus Jordan occurs in the Great Lakes, the Ohio Valley, the lower Mississippi 

 Valley, and eastward to the Pearl River of Mississippi. Noturus flavater, new species, 

 of the Ozark upland, approximates A^. miurus geographically, but the known ranges 

 of the two species do not overlap. 



miurus is found throughout the Ohio drainage, and in the lower parts 

 of the Tennessee and Mississippi Valleys. It has crossed over into 

 parts of the lower Great Lakes drainage and into various GuK coastal 

 streams lying to the eastward of the lower Mississippi River, to the 

 Pearl River, Mississippi. Records of miurus from the upper Missis- 

 sippi Valley except a simple crossover into the Kaskaskia River, Illi- 

 nois, are without foundation. Dispersal in N. miurus has probably 

 been rather easily attained since it readily enters relatively small 

 streams with little current. 



Although regarded as allopatric species, the actual range of N. 

 flavater closely approximates that of N. miurus in southeastern Mis- 



