PLATE 4 



Left pectoral spines of members of the subgenus Rahida, all drawn to same scale. [Figures 

 2, 3, and 6 were drawn by Dorothea Schultz; all others by W. L. Brudon.] 



Figure 1. Noturus hildebrandi hildebrandi (Bailey and Taylor) (female; SL 38.8 mm.). 

 UMMZ 155338, Mississippi: Brushy Cr., 4 mi. NE. of Coles, Amite Co. 



Figure 2. Noturus hildebrandi lautus, new subspecies (female; SL 40.0 mm.). USNM 

 193470, Tennessee: North Fork Obion R., Henry Co. 



Figure 3. Noturus baileyi, new species (female; SL 42.7 mm.). USNM 201601, Great 

 Smoky Mountains National Park: Abrams Cr. 



Figure 4. Noturus albater, new species (female; SL 53.2 mm.). UMMZ 151407, Missouri: 

 Flat Cr., 0.5 mi. S. of McDowell, Barry Co. 



Figure 5. Noturus elegans, new species (female; SL 52.2 mm.). UMMZ 155526, Kentucky: 

 Fallen Timber Cr., Hwy. 90, 8 mi. SE. of Glasgow, Barren Co. 



Figure 6. Noturus elegans, new species (female; SL 59.2 mm.). USNM 201600, probably 

 Duck River system, Tennessee (see p. 143). 



Figure 7. Noturus trautmani, new species (male; SL 42.4 mm.). OSU 5914, Ohio: Big 

 Darby Cr., 1 mi. S. of Fox, Pickaway Co. 



Figure 8. Noturus eleutherus Jordan (female; SL 59.4 mm.). OSU 5157, Ohio: Little 

 Miami R., Red Bank, Hamilton Co. 



Figure 9. Noturus placidus, new species (female; SL 44.0 mm.). UMMZ 167654, Kansas : 

 Neosho R., U.S. Hwy. 50, near Emporia, Lyon Co. 



Figure 10. Noturus niunitus Suttkus and Taylor (female; SL 44.0 mm.). USNM 197708, 

 Mississippi: Pearl R., 2.3 mi. E. of Sandy Hook, Marion Co. 



Figure 11. Noturus stigmosus, new species (female; SL 57.5 mm.). UMMZ 108063, 

 Michigan: Huron R., above Dexter, Washtenaw Co. 



Figure 12. Noturus furiosus Jordan and Meek (female; SL 69.2 mm.). UMMZ 165855, 

 North Carolina: Raleigh. 



Figure 13. Noturus miurus Jordan (female; SL 58.0 mm.). UMMZ 165840, Michigan: 

 Huron R., 1.75 mi. NW. of Dexter, Washtenaw Co. 



Figure 14. Noturus flavipinnis, new species (female; SL 63.8 mm.). SU 4606, locality 

 unknown; thought to be from the upper Tennessee River basin. 



Figure 15. Noturus flavater, new species (female; SL 57.1 mm.). UMMZ 152091, Missouri: 

 North Fork White R., Tecumseh, Ozark Co. 



