136 U.S. NATIONAL MUSEUM BULLETIN 2 82 



tive of hildebrandi but the color pattern includes some characters of 

 both forms. The two slender bodied specimens from the Loosahatchie 

 River, Tennessee, tend strongly toward typical lautus in most char- 

 acters but are considered intermediate because of the presence of a 

 short blotch on the adipose fin and considerable extension of pigment 

 onto the lower side. The remaining five specimens from the Yazoo 

 system, Mississippi, are relatively short bodied with head lengths, 

 pore counts, and pigmentation patterns intermediate or tending 

 strongly toward hildebrandi but the anal ray count is relatively high 

 as in lautus. Thus, aside from the Coldwater River specimens, the 

 characters of the few known individuals from the Loosahatchie and 

 Yazoo systems rather closely approach those of the adjacent sub- 

 species. 



Noturus hildebrandi hildebrandi (Bailey and Taylor) 



Plates 4 (fig. 1), 10 (fig. 1) ; Map 9 



Schilbeodes hildebrandi Bailey and Taylor, 1950, pp. 31-38, pis. 1-2, figs. E-F 

 (original description; Brushy Cr., Amite Co., Miss.; ecology). — Cook, 1953, 

 pp. 192, 195 (Mississippi).— G. A. Moore, 1957, pp. 143, 145, figs. 2-79C, 

 2-81 (description; range). 



Noturus hildebrandi (Bailey and Taylor). — Eddy, 1957, p. 154 (key; range). — 

 Taylor, 1957, p. 192.— Cook, 1959, pp. 34, 37, 135, 143, figs. 25A-B (descrip- 

 tion; Mississippi records). — Suttkus, 1961, p. 63, fig. 5 (comparison; skull 

 illustrated). — Suttkus and Taylor, 1965, pp. 171, 175 (comparison). — Raney 

 and Suttkus, 1966, p. 101 (associations with Etheostoma rubrum, Bayou Pierre, 

 Miss.). 



Type-specimens.— UMMZ 157620 (holotype), UMMZ 155338 (21 

 paratopotypes), and USNM 112066 (4 paratopotypes), collected from 

 Brushy Creek, 1 mi. above its mouth in Homochitto River, at village 

 of Homochitto, 4 mi. NE. of Coles, sec. 14, T. 4 N., R. 2 E., Amite 

 Co., Mississippi, April 1, 1948, by Reeve M. and Marian K. Bailey. 



Other material studied 



UNITED STATES: Mississippi: Homochitto River system: USNM 172031 

 (16 specimens, 29-45 mm. standard length). Brushy Cr., Homochitto, Amite Co. 

 TU 2915 (13, 29-51), TU 11990 (4, 41-45), TU 19774 (7, 40-52), TU 19846 (2, 

 46-49), trib., Homochitto R., Lucien, U.S. Hwy. 84, Franklin Co. TU 19995 

 (1, 28), Homochitto R., 3.6 mi. SE. Meadville, Hwy. 98, Franklin Co. TU 23897 

 (23, 31-49), Homochitto R., 4.9 mi. E. Union Church, Hwy. 550, Lincoln Co. TU 

 23961 (14, 39-53), Homochitto R., 0.4 mi. E. Lucien, U.S. Hwy. 84, Franklin Co. 

 Bayou Pierre system: USNM 200380 (11, 31-47), Bayou Pierre, about 5 mi. SW. 

 Utica Institute, Hwy. 18, Copiah Co. FSU 9226 (6, 23-28), Bakers Cr., 2.2 mi. SE. 

 Port Gibson, Hwy. 547, Claiborne Co. FSU 9265 (8, 22-40), Bayou Pierre, 8.7 mi. 

 SW. Utica, Hwy. 18, Copiah Co. 



Diagnosis. — Noturus hildebrandi hildebrandi differs prominently 

 from Noturus hildebrandi lautus in having a larger head stepped 3.0 to 

 3.7, usually 3.1 to 3.5 times in standard length; modally eleven pre- 



