CATFISH GENUS NOTURUS RAFINESQUE 



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Map 10. — The distribution of Noturus albater, new species. Circles represent material 

 examined. Unverified records which appear to be based on A^. albater lie well within the 

 indicated range. 



(c) 8.94; preoperculomandibular pores (a) 10.93, (b) 10.90, (c) 10.92; 

 anal rays (a) 14.50, (b) 14.90, (c) 14.54; lower-half caudal rays (a) 

 24.25, (b) 24.30, (c) 24.26; upper-half caudal rays (range: (a) 23 to 28; 

 (b) 22 to 26) (a) 25.13, (b) 24.20, (c) 25.03; total caudal rays (a) 49.35, 

 (b) 48.50, (c) 49.27; vertebrae (a) 36.78, (b) 37.00, (c) 36.80. Only 

 pectoral and pelvic rays were counted from four Saint Francis River 

 specimens. These coincide with counts from White River specimens. 

 Considering the small size of the Black River sample, no important 

 differences are evident. 



Relationships. — Noturus cdbater is a distinctive species without 

 close aflfinity to any other species of the subgenus Rabida. The increased 

 number of pectoral rays and the shortening of the anterior pectoral 



