102 U.S. NATIONAL MUSEUM BULLETIN 2 82 



172874 (2), Saline R., due E. Bienville, sec. 23, T. 16 N., R. 6 W., Bienville 

 Parish. USNM 172895 (1), creek, sec. 27, T. 22 N., R. 1 E., Union Parish. USNM 

 172905 (6) and USNM 172944 (5), Meridian Cr., 1 mi. E. Conway, sec. 17, T. 

 22 N., R. 1 E., Union Parish. USNM 172915 (7), Clarks Cr., sec. 24, T. 17 N., 

 R. 1 E., Ouachita Parish. TU 911 (153) and TU 6260 (159), Big Cr., at Pollock, 

 Grant Parish. TU 1223 (1), trib.. Red R., U.S. Hwy. 71, 10 mi. SE. Colfax, 

 Grant Parish. TU 1343 (1), trib.. Spring Cr., Hwy. 85, 5.1 mi. E. Hineston, 

 Rapides Parish. TU 1361 (4), stream, 2 mi. N. Minden, Webster Parish. TU 

 2058 (17), Rocky Br., trib. to Spring Cr., Hwy. 85, 9.1 mi. E. Hineston, Rapides 

 Parish. TU 3457 (68), trib.. Bayou Cocodrie, Hwy. 85, Rapides Parish. TU 5234 

 (3), Corney Br. Beaver Cr., Hwy. 311, 4.4 mi. SW. Wilson, East Feliciana Pa- 

 rish. TU 5774 (1), Indian Cr., 3.1 mi. S. Woodworth, Rapides Parish. TU 5868 

 (6), Br. of Spring Cr., Hwy. 85, Melder, Rapides Parish. TU 13737 (1), Little 

 Bayou Pierre, Mora Road, 8.5 mi. E. Kisatchie, Natchitoches Parish. TU 14173 

 (6), trib. to Bayou Teche, Hwy. 85, E. of Melder, Rapides Parish. TU 14330 

 (17), stream, Hwy. 8, 0.5 mi. SW. Manifest, Catahoula Parish. Mississippi: 

 Tulsa U (uncataloged) (1), Brushy Cr., Homochitto, Amite Co. TU 2922 (6), 

 TU 15121 (5), TU 19775 (1), TU 19850 (5), and TU 23964 (1), trib., Homo- 

 chitto R., U.S. Hwy. 84, vicinity of Lucien, Franklin Co. TU 7203 (1), trib., 

 McCall Cr., U.S. Hwy. 84, 13.2 mi. E. Bude, Franklin Co. TU 23892 (2), Homo- 

 chitto R., Hwy. 550, 4.9 mi. E. Union Church, Lincoln Co. 



Diagnosis. — Noturus phaeus, subgenus Schilbeodes, has 18 to 25, 

 usually 20 to 22 anal rays; the anal and caudal fins only slightly 

 separated; the dorsal spine slender and usually flexible, but stiff in 

 large specimens; the lower surfaces of the head and abdomen pro- 

 fusely sprinkled with large chromatophores ; 7 to 10, usually 8 or 9 

 soft pectoral rays; typically 9 pelvic rays, 11 preoperculomandibular 

 pores, and 2 internasal pores; 50 to 59 caudal rays; and the lower 

 jaw is included. The body and fins are nearly unicolor, typically 

 medium to dark brown. N. phaeus differs from N.funebris, its allopat- 

 ric relative, in the constant presence of distinct, well-developed 

 posterior serrae on the pectoral spine and averages fewer pectoral 

 and anal rays over much of its range. 



Description. — Other counts and measurements are given in tables 

 17 to 26. Head rounded above; lower jaw included; body heavy and 

 moderately elongate, not much deeper anteriorly than posteriorly; 

 dorsal spine slender, relatively flexible especially in young; dorsal 

 fin pointed, the first or second ray longest; adipose fin relatively low, 

 united to the procurrent caudal fin; pectoral spine short, stout, 

 nearly straight, with three to eight, usually four to six distinct pos- 

 terior serrae in juveniles to adults; serrae relatively uniformly devel- 

 oped, nearly straight to slightly curved, sharp, except in old specimens, 

 their length greater than half the diameter of the spine shaft; end of 

 caudal fin rounded to truncate; posterior corners of premaxillary 

 tooth band slightly rounded; eye small, 2.1 to 2.6 times in snout; 

 posterior process of cleithrum about equal in length to the width of 

 the pectoral spine. 



