EXPLORATIONS OF THE ALLEGHANY REGION AND WESTERN INDIANA. 
155 
13. Lepomis gibbosus (L.) 
Common. 
14. Micropterus dolomieu (Lac6p&de). 
Common. 
15. Etheostoma nigrum (Rafinesque). 
Scarce ; cheeks naked. 
16. Etheostoma aspro (Cope and Jordan). 
Scarce ; cheeks naked ; opercles scaly. Scales 69. 
17. Etheostoma ccenileum Storer. 
Abundant. Scales 47. 
Unios were found very abundant, but cray-flshes were scarce. 
O.— KANKAKEE RIVER (ILLINOIS BASIN). 
The Kankakee River, the easternmost tributary of the Illinois, rises at a point 
not far from South Bend, and flows in a southwestward direction, largely through 
swamps and lakes, into the State of Illinois. One of its chief tributaries in Indiana 
is Yellow River, which enters it from the east. This stream was seined near Ply- 
mouth, Ind., September 18, 1888; temperature, 62°. At Plymouth, the river is 
rather large, its water very clear, flowing over a bottom chiefly of coarse gravel. The 
rocks and stones are covered with Chara, algae, and other water-plants. There are 
also deep pools with stretches of sand and of black mud. Collections were made 
from the flouring-mill at Plymouth up the stream to the dam. Few streams have been 
found so well stocked with darters as this, although the number of species is small. 
Cray-flshes were also excessively abundant. 
1. Noturus flavus Rafinesque. 
Abundant. 
2. Ameiurus natalis (Le Sueur). 
Common in the pools. 
3. Catostomus teres (Mitchlll). 
Common. 
4. Catostomus nigricans (Le Sueur). 
Scarce. 
5. Erimyzon sucetta (Lac^pfede). 
Common. 
6. Minytrema melanops (Rafinesque). 
Scarce. 
7. Moxostoma duquesnei (Le Sueur). 
Scarce. 
8. Campostoma anomalum (Rafinesque). 
Common. 
9. Pimephales notatus (Rafinesque). 
Scarce. 
