86 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
49. Micropterus doloniieu Lacepecle. Small-moitlhed Black Bass; Trout. Illinois Kiver at Riissell- 
ville; Mulberry River at Mulberry and Sallisaw River at Makey’s (coiumou). 
50. Btheostoma pelluciduni vivax (Hay). Saud Darter. East Fork Chadron at Conway (scarce); 
Illinois River at Russellville (common). 
51. Btheostoma blennioides (Ratiuesque). Green-sided Darter. Cove Creek at Martinsville; Illinois 
River at Russellville and Sallisaw River at Makey’s (scarce). 
52. Btheostoma aspro (Cope & .Iordan). Black-sided Darter. Chadron River at Pinnacle Springs; 
East Fork Chadron at Conway ; Cove Creek at Martinsville and Sallisaw River at Makey’s 
(scarce). 
53. Btheostoma saxatile (Hay). East Fork Chadron at Conway and Cove Creek at Martinsville 
(scarce) ; Illinois River at Russellville and Sallisaw River at Makey’s (common). 
54. Btheostoma zonale (Cope). Illinois River at Russellville (scarce). 
55. Btheostoma whipplei (Girard). Illinois River at Russellville (scarce) ; Sallisaw River at 
, Makey’s (common). 
56. Btheostoma chlorosoma (Hay). East Fork of Chadron R.ver at Conway (scarce). Dorsal 
spines, 8 to 10. 
57. Btheostoma cceruleum spectabile (Agassiz). Itainbow Darter. Sallisaw River at Makey’s 
(common). 
58. Btheostoma microperca Jordan & Gilbert. Least Darter. Illinois River at Russellville and 
Sallisaw River at Makey’s (scarce). 
59. Stizostedion canadense (C. H. Smith). WaU-eyed Pike; Sanger. Illinois River at Russellville 
(scarce). 
60. Roccus chrysops (Ratiuesque). Striped Bass. Arkansas River at Mulberry (common). 
61. Aplodinotus grunniens (Ratiuesque). Fresli-ivater Drum. Arkansas River at Little Rock and 
Mulberry (common). 
THE ILLINOIS RIVER BASIN. 
This river drains a portion of tlie iiortberii and western slo^ie of tLe Boston JMoun- 
tains. It first flows north and then west, into the Indian Territory, thence bending 
south and emptying into the Arkansas Eiver near Fort Gibson. Its basin lies, for 
the most i)art, in a cherty limestone region, and its upper tributaries are well supplied 
with springs and spring brooks. The Illinois resembles closely the upper White Eiver. 
It was examined near Prairie Grove and Ladd’s Mill, in Washington County, Ark. 
At both of these localities the stream is a good-sized creek, Avith rocky and sandy 
bottom. Clear Creek, an eastern tributary, is a clear stream Avell fed by s^irings, 
Johnson spring being near its source. The Barren Fork and Jordan Creek are also 
supplied richly by springs, though these are all small. Our collections from Jordan 
Creek were made near the mouth at Dutch Mills; from Clear Creek, near Johnson. 
LIST OF THE FISHES OF THE ILLINOIS RIVER B.TSIN IN W’ASHINGTON COUNTY, ARKANSAS. 
1. Ameiurus melas (Ratiuesque). Bullhead. Illinois River at Prairie Grove and Ladd’s Mill 
(common). 
2. Catostomus teres (Mitchill). Common TVhite Sucker. Illinois River at Prairie Grove (abundant) 
and Ladd’s Mill (common); Clear Creek at Johnson and .Iordan Creek at Dutch Alills 
(common). 
3. Catostomus nigricans (Le Sueur). Hog Sucker; Mullet. Illinois River at Prairie Grove (com- 
mon) and Ladd’s Mill (scarce). 
4. Noturus exilis (Nelson). Stone Cat. Illinois River at Ladd’s Mill (scarce). 
5. Moxostoma duquesnei (Le Sueur). Common itedhorse Sucker. Illinois River at Prairie Grove and 
Ladd's Mill (scarce) ; Clear Creek at Johnson and Jordan Creek at Dutch Mills (common). 
6. Campostoma anomalum (Ratiuesque). Stone-roller; Stone-lugger. Illinois Riv'er at Prairie Grove 
and Ladd’s Mill; Jordan Creek at Dutch Mills; Clear Creek at Johnson (common). 
