FISHES OF THE MISSOURI RIVER BASIN. 407 



with numerous dark spots; middle of side with a hroad plumbeous band, 

 broader than eye, chiefly above lateral line; the upper edge of this band 

 distinctly deliued, the lower less distinct; lower sides and under parts pale; 

 top of head dark, rest of head pale ; cheeks aud oporcles silvery ; fins all 

 pale, dorsal and caudal with some dark specks. 



68. Notropis atherinoidesRafincsque. Big Sioux River at Sioux City (Meek, 1892) ; 



Poplar River, Poplar, Mont. (Eigcnmaun, 1894). 



69. Notropis dilectus (Girard). Kansas (as Alburnus oligaspis type, Cope, 1861n); 



Grand River, Clinton, Mo. ; Tabo Creek, Calhoun, Mo. (Jordan & Meek, 

 1885); Missouri River at Sioux City and Big Sioux River at Sioux Falls 

 (Meek, 1892); Floyd River at Sioux City and Elkhorn River at Fremont 

 (Meek, 1891); Elkhorn River, Norfolk Junction; Bazile Creek, Niobrara; 

 Platte River, Grand Island; South Loup River, Ravenna; Dakota River, 

 Mitchell. This species, like N.jejunus, is found usually in the clear, shal- 

 low streams on sandy bottom, but where the water is only moderately cold. 

 It does not seem to be widely or generally distributed in the Missouri Basin. 

 Many of the specimens obtained by us are unusually large, particularly 

 those from Fremont and Ravenna, the largest measuring 3£ inches in total 

 length. Head4f; depth 5; eye 3^; snout 4; D. I, 8; A. i, 13; scales 6-40-3, 

 20 before the dorsal, closely imbricated and deeper than long; lateral line 

 decurved. Body long and slender, compressed ; head moderate, snout pointed ; 

 mouth large, oblique, terminal; maxillary reaching vertical of front of eye; 

 eye large, equal to interorbital width; caudal peduncle long; its least 

 depth 21 in head. Origin of dorsal fin much behind insertion of ventrals 

 nearer base of caudal than tip of snout. Color pale, upper parts dusted 

 over with fine brown punctulations, thickest on edges of scales, thus result- 

 ing in faint cross-hatching; median line of back dark, darkest on caudal 

 peduncle; middle of side with a broad silvery band, plumbeous above; 

 under parts pale straw-color; head dusted above and on lips and chin; 

 cheeks and opercles bright silvery; fins all pale except dorsal and anal, 

 which have some fine dark specks. This trim minnow resembles N. jejunns 

 in general appearance, but can be readily distinguished from all other 

 species of Notropia found in the Missouri Basin by its large anal fin and the 

 posterior position of the dorsal. 



70. Notropis rubrifrons (Cope). St. Joseph, Mo. (as Alburnellus pcrcobromus type, 



Cope, 1871) ; Blackwater River, Brownsville, Saline County, Mo. ; Flat Creek, 

 Sedalia, Mo. (Jordan & Meek, 1885) ; Kansas and Missouri rivers (Graham, 

 1885) ; Osage River, La Cygne, Kans. (Gilbert, 1889) ; Osage Fork, Marsh- 

 field, Mo. ; Lock Fork, Mansfield, Mo. ; Little Piney River at Arlington and 

 Newburg, Mo.; Sac River, Springfield, Mo. (Meek, 1891). 



71. Notropis umbratilis umbratilis ( Girard). Bedfin. Shunganunga Creek, Topeka 



(as Minnilus (Lythrurus) nigripinnis type, Gilbert, 1884); Shunganunga 

 Creek (Cragin, 1885a) ; Hundred and Two River at Bedford, Iowa, and Mary- 

 ville, Mo. ; Blackwater Creek, Brownsville, Saline County, Mo. ; Flat Creek, 

 Sedalia, Mo. ; Grand River, Clinton, Mo. ; Tabo Creek, Calhoun, Mo. (Jordan & 

 Meek, 1885); Shunganunga Creek, Topeka (as N. nigripinnis, Gilbert, 1885); 

 north fork of Solomon River, Lenora, Kans. (Hay, 1887); Lock Fork, Mans- 

 field, Mo. ; Osage Fork, Marshfield, Mo. ; Marais River, Dixon, Mo. ; Sac River, 

 Springfield, Mo. (Meek, 1891). 



72. Phenacobius mirabilis (Girard). Ward Creek, Shawnee County, Kans. (Gilbert, 



1884) ; Hundred and Two River at Bedford, Iowa, and Maryville, Mo. ; Tabo 

 Creek, Lexington and Calhoun, Mo. ; Blackwater Creek, Brownsville, Saline 

 County, Mo.; Flat Creek, Sedalia, Mo.; Grand River, Clinton, Mo. (Jordan 

 & Meek, 1885); common throughout Kansas (Graham, 1885); Shunganunga 

 and "Ward creeks, Shawnee County, Kans. (Gilbert, 1885); Shunganunga 

 and Ward creeks (Cragin, 1885 a); Solomon River, Beloit, Kans. ; north fork 



