170 U.S. NATIONAL MUSEUM BULLETIN 2 82 



River, just S. of U.S. Hwy. 50, near Emporia, sec. 7, T. 19 S., R. 

 12 E., Lyon Co., Kansas, collected July 11, 1952, by W. R. Taylor and 

 F. B. Cross. USNM 200679 (8 paratopotypes) , same locality, col- 

 lected August 13, 1965, by W. R. and Brian Taylor, Cross, and Ron 

 S. Nolan. 



Other paratypes. — The catalog number is followed by the number 

 of specimens in parentheses. 



UNITED STATES: Kansas: UMMZ 97126-7 (4), Neosho R., 12 mi. NE. 

 of Parsons, Neosho Co., September 22, 1930, J. Clark Salyer II. KU 1757 (2), 

 Neosho R., CoflFey Co., University of Kansas Biological Survey. KU 2.518 (42) 

 and UMMZ 167655 (15), Neosho R., Neosho Rapids, sec. 29, T. 19 S., R. 13 E., 

 Lyon Co., July 11, 1952, W. R. Taylor and F. B. Cross. KU 2519 (2), Neosho R., 

 Hartford, sec. 10 and 15, T. 20 S., R. 13 E., Lyon Co., July 12, 1952, Taylor and 

 Cross. KU 2520 (6) and UMMZ 167657 (2), Neosho R., BurUngton, sec. 26, 

 T. 21 S., R. 15 E., Cofifey Co., July 12, 1952, Taylor and Cross. KU 2521 (12) 

 and UMMZ 167656 (4), Neosho R., Neosho FaUs, sec. 28 and 33, T. 23 S., R. 

 17 E., Woodson Co., July 12, 1952, Taylor and Cross. KU 2693 (68), Cottonwood 

 R., sec. 25, T. 19 S., R. 8 E., Chase Co., August 14, 1952, Cross and R. L. Car- 

 penter. KU 2915 (5), Neosho R., sec. 16, T. 32 S., R. 21 E., Labette Co., May 9, 

 1953, Cross. KU 7769 (24), Neosho R., 1 mi. S. and 0.5 mi. E. Montana, Labette 

 Co., April 11, 1963, Martin L. Wiley. KU 8462 (29), Neosho R., 2.5 mi. W. and 

 0.5 mi. N. St. Paul, sec. 16, T. 29 S., R. 20 E., Neosho Co., August 27, 1959, James 

 Deacon. USNM 200677 (38), Cottonwood R., at mouth of South Fk. Cottonwood 

 R., sec. 25, T. 19 S., R. 8 E., Chase Co., August 13, 1965, W. R. and Brian Taylor, 

 Cross, and Ron S. Nolan. Oklahoma: KU 2403 (1), Illinois R., near mouth, 

 Sequoyah Co., August 24, 1946, J. M. Paden. UMMZ 156772 (2), mouth of 

 Illinois R., sec. 20-21, T. 12 N., R. 21 E., Sequoyah Co., August 24, 1946, G. A. 

 Moore. UMMZ 156774 (1), Illinois R., about 5 mi. NE. of Gore, sec. 22-23, and 

 27, T. 13 N., R. 21 E., August 23-27, 1946, Moore. Tulsa U (no number) (2), 

 Illinois R., Gore, Sequoyah Co., August 27, 1948 and October 7, 1950, A. P. 

 Blair. Tulsa U (no number) (1), Neosho R., 4 mi. NW. of Miami, Ottawa Co., 

 September 29, 1951, Blair. 



Diagnosis. — Noturus (Rahida) placidus has a moderately long 

 humeral process, rather weak dentations of the anterior edge of the 

 pectoral spine, a somber color pattern, 50 to 59 caudal rays, 13 to 16 

 anal rays, 11 preoperculomandibular pores, 2 internasal pores, 9 

 pelvic rays, and 8 soft pectoral rays. It is a member of the furiosus 

 group, which is characterized by having a midcaudal brownish cres- 

 cent of pigment, a relatively deep, chunky body, and tending to have 

 typical saddle marks, of which the first bears two very faint, light, 

 predorsal spots; but the adipose fin is relatively well connected with 

 the caudal, the humeral process and the serrations of the pectoral 

 spine are somewhat reduced, the blotch of the adipose fin is dusky and 

 enters only its base, the lower procurrent caudal rays are usually 

 unpigmented, and the beUy generally lacks chromatophores. 



Description. — Other counts and measurements are given in 

 tables 17 to 26. Body heavy, deepest below the dorsal fin; caudal 



